content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
understanding sub u
December 2nd 2011, 01:42 PM
delgeezee
understanding sub u
My book has an example that I am having trouble comprehending
Find $\int_{}{} \frac{x}{\sqrt{x+1}} dx$
"Subsititution 1: The composite function $\sqrt{x+1}$ suggests the new variable u = x+1. You might doubt whether this choi... | 5 | [
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Solve the equation
So if $a=b=c$ the equation becomes: $3a^4+3a^2+12a+12=6a^3+12a^2\Leftrightarrow a^4-2a^3-3a^2+4a+4=0\Leftrightarrow$$(-2 + a)^2 (1 + a)^2=0$ So $a=b=c=2$ and $a=b=c=-1$ are solutions.
No ideas how to prove that there are no other solutions? Maybe this equation is an inequality and equality holds iff... | 4 | [
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Difficult definite integral
The question: $\int_{-1}^{0} \sqrt{t^2 + t^4} dt$ I'm stumped. Not sure how to attempt this. Any assistance would be great.
How about first taking $t^2$ from within the square root, and move it outside as $|t|$: $\sqrt{t^2+t^4} = \sqrt{t^2(1+t^2)} = |t|\sqrt{1+t^2} = -t\sqrt{1+t^2},$ where ... | 5 | [
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On Pseudo-finite topological spaces
up vote 6 down vote favorite
We recall that a topological space $(X,\tau)$ is Pseudo-finite, if each compact subset of $X$ is finite.
One of the classical example of Pseudo-finite topological spaces can be considered as an uncountable set $X$ with the co-countable topology.(i.e.eac... | 4 | [
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Torsion Subgroup
October 21st 2011, 03:20 AM #1
Torsion Subgroup
Dummit and Foote Section 2.1 (Definitions and Examples of Subgroups) Exercise 6 reads as follows:
Let G be an abelian group. Prove that H = {g $\in$ G| |g| is less than infinity} is a subgroup of G (called the torsion subgroup of G). Give an ex... | 5 | [
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Confidence intervals
January 26th 2010, 08:07 AM #1
Member
Joined
Jun 2008
Posts
77
Confidence intervals
im not asking to do the problems because i really want to learn this. i just need a little help understanding the material. i haven't done this stuff in quite some time and my book was on back
ord... | 5 | [
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Math
Brightstorm is like having a personal tutor for every subject
See what all the buzz is about
Check it out
ACT Math Tips 4,986 views
We're taping this course in San Francisco and the streets are really confusing; lots of dead ends, lots of construction, lots of hills and it's been taking me a really long time ... | 4 | [
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Integration
Hi there can anyone help me integrate the following $\int$ (x^2+1)/(x^4+1) I've been trying unsuccessfully :(
What have you tried? Maybe break it up using partial fractions?
$I = \int\frac{x^2+1}{x^4+1}\;{dx} = \int\frac{1+\frac{1}{x^2}}{x^2+\frac{1}{x^2}}\;{dx } = \int\frac{1+\frac{1}{x^2}}{(x-\frac{1}{x... | 5 | [
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iscoeles triangle
February 28th 2009, 07:14 AM #1
Newbie
Joined
Feb 2009
Posts
2
I know that a isoceles triangle has 2 equal sides and 2 equal angles. The sides of the 2 sides are 5m and the angles are 72.64 degrees, making the top angle 34.72 degrees. But i do not know how
to work out the base length... | 4 | [
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Highly Annoying Related Rates Problem: Spherical Ballon
March 20th 2010, 05:20 PM
Zanderist
Highly Annoying Related Rates Problem: Spherical Ballon
This is just a tutorial on how to solve a problem like this.
The problem is:
Quote:
A Spherical balloon is to be deflated so that its radius decreases... | 4 | [
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correlation coefficient help
January 7th 2010, 05:12 AM
dhowlett
correlation coefficient help
Hey, im a first year in leeds uni doing maths and there are some things im starting to get quiet stressed over and they arnt even hard so you'll probably see quite a few of my posts pop up with
my exams coming in a ... | 5 | [
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Homework Help
Posted by PLS HELP on Friday, October 11, 2013 at 9:46am.
Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal
frictionless surface. The spring-mass system is compressed... | 5 | [
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Heat problem with a heat equation
November 24th 2009, 01:10 PM
arbolis
Heat problem with a heat equation
Consider a thermally isolated copper bar whose extremities are maintained to 0°C. The initial distribution of temperature is given by $T(x)=100 \sin \left ( \frac{\pi x}{L} \right )$ where $L$ is
the leng... | 5 | [
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Homework Help
Posted by Brenden on Sunday, September 20, 2009 at 4:01pm.
An airplane flies 200 km due west from city A to City B and them 300 km in the direction of 30.0 degrees north of west from city B to city C. In straight-line distance, how far is city C from city A?
Relative to city A, in what direction is city ... | 4 | [
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Answer check data management
December 28th 2008, 02:46 PM #1
Junior Member
Joined
Nov 2008
Posts
53
Answer check data management
46. a) How many five-letter "words" (combinations of letters) can be formed from the word "March"?
Answer: 5! = 5 x 4 x 3 x 2 x 1
= 120 different words can be formed
... | 4 | [
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Math Help
July 29th 2009, 06:26 AM #1
Senior Member
Joined
Jan 2009
Posts
381
elevation
From a point A south of the vertical tower , the angle of elevation of the top of the tower is observed to be 34 degree . From A , an observer walked a distance of 270 m on a bearing 070 degree
and found that his... | 4 | [
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Evaluate and find exact values
November 21st 2009, 08:49 PM #1
Junior Member
Joined
Sep 2008
Posts
34
Evaluate and find exact values
Find the Exact Values
125^1/3 - 10^0(64)^2/3
Here is what i done for the first one
3root125 - 10 1/3root(64^2)
5- 160
= -155
The answer from the... | 4 | [
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Tangent line problem
February 23rd 2009, 06:04 PM #1
Junior Member
Joined
Jan 2009
Posts
36
Tangent line problem
The two tangents that can be drawn from the point (3,5) to the parabola y=x^2 have slopes?
-my steps
y'=2x
I know this is sad. But i just don't know what the question is asking i ... | 4 | [
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A type theoretical Yoneda lemma
In this blog post I would like to approach dependendent types from a presheaf point of view. This allows us to take the theory of presheaves as an inspiration for results in homotopy type theory. The
first result from this direction is a type theoretical variant of the Yoneda lemma, sta... | 4 | [
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MLIP: using multiple processors to compute the posterior probability of linkage
Abstract
Background
Localization of complex traits by genetic linkage analysis may involve exploration of a vast multidimensional parameter space. The posterior probability of linkage (PPL), a class of statistics for
complex trait genetic... | 4 | [
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Topic: A bug in Reduce package 'algint'?
Replies: 9 Last ... | 5 | [
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[SOLVED] Proofs of Limits
October 27th 2009, 04:42 PM
lindz
[SOLVED] Proofs of Limits
I have the proof of lim n->∞ (1+α/n)^n = e^α. And I need to define ln x = integral from 1 to x of 1/t dt for x > 1. I also want to-
i) Prove that f(t) = 1/t is decreasing for 1 < t < 1+h hence:
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Fluid flow problem
September 27th 2011, 10:24 AM #1
Junior Member
Joined
Sep 2011
Posts
70
Thanks
2
Fluid flow problem
A tank with vertical sides has a square cross-section of area 4 ft squared. Water is leaving the tank through an orifice of area 5/3 inches squared. Water also flows into the tank at... | 5 | [
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Parametrize the curve of intersection
December 7th 2009, 02:37 PM
jonnyp2009
Parametrize the curve of intersection
Parametrize the curve of intersection of the sphere x^2+y^2+z^2=1 and the elliptic cylinder x^2+2z^2=1. Find the total length of this intersection curve.
December 7th 2009, 02:54 PM
TheEmptySet
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What sort of DE is this?
October 31st 2010, 07:48 PM #1
Senior Member
Joined
Jul 2006
Posts
364
What sort of DE is this?
$\dot{x}=x-x^2-\lambda$ where $\lambda \ge 0$ is a constant.
It's not Bernoulli, since it's not of the form
$\dot{x}= ax + bx^n$
So what is it? And how do I solve it?
... | 5 | [
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Find the Problem with this Proof
February 17th 2007, 08:31 PM
Ideasman
Find the Problem with this Proof
My task is to find the flaw with the following given proof:
This "proof" attempts to prove that there do not exist any primes that are greater than 101.
Proof:
Let n > 101. Then it is evident if... | 4 | [
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Integer division
Show 666 divides 1296^n - 666n + 36 for all integers n less than or equal to 1.
If you mean "... for all positive integers n less than or equal to 1," then the result is true. In fact, there is only one such integer, namely n=1, and you can easily verify that 1296–666+36 = 666.
If you allow n to be ze... | 5 | [
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Lecture 35: Doppler Effect and The Big Bang
Today I want to talk with you about Doppler effect, and I will start with the Doppler effect of sound which many of you perhaps remember from your high school physics.
If a source of sound moves towards you or if you move towards a source of sound, you hear an increase in th... | 5 | [
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0.0390625,
0.0322265625,
0.04345703125,
-0.0031890869140625,
0.0198974609375,
-0.05615234375,
0.00830078125,
-0.0064697265625,
0.068359375,
0.040039... | 8,727 | 8727 | |
SPIRALOGARITHM – POWERS,SERIES,SIMPLY,BY COMPASS AND RULER By Panagiotis Stefanides
About this iReport
Not vetted for CNN
Location
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Assignment
This iReport is part of an assignment:
Tech talk
More from PCSTEFANIDES
SPIRALOGARITHM – POWERS,SERIES,SIMPLY,BY COMPASS AND RULER By... | 4 | [
-0.11083984375,
-0.0223388671875,
-0.05712890625,
-0.031494140625,
-0.044189453125,
-0.1044921875,
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0.05322265625,
0.07763671875,
-0.06103515625,
0.0211181640625,
-0.000797271728515625,
-0.006103515625,
-0.000362396240234375,
-0.0712890625,
-0.0189208984375,
-0.162109... | 8,728 | 8728 | |
Volume of a Pond
Date: 1 Feb 1995 19:25:49 -0500
From: Richard L. Burnett
Subject: Advice on math problem
I need to have a large pond cleaned at my place of employment. The pond
is 320' long and is 85' wide. The pond is 22' deep and the sides
are sloped 2" for every 1' of depth. The pond is completely filled with... | 4 | [
-0.000484466552734375,
0.05517578125,
0.046142578125,
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0.0218505859375,
-0.043212890625,
0.044677734375,
-0.111328125,
-0.0625,
0.03564453125,
0.154296875,
-0.042724609375,
0.0286865234375,
-0.0751953125,
0.0085449218... | 8,729 | 8729 | |
Math Help
April 29th 2010, 11:41 AM #1
Junior Member
Joined
Mar 2010
Posts
40
Dice
Hi,
We throw three dice: A(1-1-1-2-2-3), B(1-2-3-4-5-6) and C(4-4-4-4-5-6), what are all different possibilities, ans what are the possibilities to have the number 1 exactly twice???
Just to clarify, only dice B... | 4 | [
-0.0179443359375,
-0.0576171875,
-0.00396728515625,
-0.0458984375,
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0.0277099609375,
-0.003936767578125,
0.0220947265625,
-0.00799560546875,
-0.08251953125,
-0.07568359375,
0.027099609375,
-0.01904296875,
-0.01544189453125,
-0.002105712890625,
-0.05053710... | 8,730 | 8730 | |
Find Mean/Variance from probability mass function
September 12th 2009, 10:22 PM #1
Newbie
Joined
Sep 2009
Posts
2
Find Mean/Variance from probability mass function
I'm not sure if this actually Advanced, but it is from a 3000-level University course. My apologies if I am misposting.
A random variab... | 4 | [
0.080078125,
-0.017333984375,
0.0693359375,
0.005706787109375,
-0.037109375,
0.0205078125,
0.037353515625,
0.05126953125,
0.06689453125,
0.0162353515625,
0.01470947265625,
-0.0771484375,
0.0284423828125,
-0.0242919921875,
-0.00084686279296875,
0.015869140625,
-0.031005859375,
-0.02... | 8,731 | 8731 | |
Functions and Inverses
January 14th 2007, 06:10 PM #1
Functions and Inverses
just 2. I got the rest down but these ones are driving me insane.
Find inverse of functions
1. h(x) = 2x/(x+10)
2. f(x) = x^2 + 6x + 11
Thanks.
$y=\frac{2x}{x+10}$
Substitute x for y and solve,
$x=\frac{2... | 4 | [
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-0.052978515625,
0.00897216796875,
-0.0162353515625,
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0.0458984375,
-0.0361328125,
0.0027923583984375,
0.0771484375,
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-0.004730224609375,
0.0225830078125,
-0.0103759765625,
0.06494140625,
-0.0466308593... | 8,732 | 8732 | |
Finding a Rule to Fit Given Data
Date: 11/14/2005 at 22:26:36
From: Rhonda
Subject: solve for j (what math process will you use:add,subtract,etc
Given that 1J1 = 2, 3J5 = 34, 6J9 = 117, and 10J14 = 296, conjecture a
value for 3J8. Justify your answer.
For 1J1, the obvious answer is addition but that doesn't fit the... | 4 | [
-0.09716796875,
0.05029296875,
0.00701904296875,
-0.006011962890625,
-0.046875,
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0.034912109375,
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-0.0283203125,
0.0208740234375,
0.0150146484375,
-0.00010347366333007812,
0.059814453125,
-0.061035... | 8,733 | 8733 | |
u-tube
[This is the eighth in a series of posts on the decadic numbers (previous posts: A curiosity, An invitation to a funny number system, What does "close to" mean?, The decadic metric, Infinite decadic
numbers, More fun with infinite decadic numbers, A self-square number).]
In my previous post, we found a decadic... | 5 | [
-0.11181640625,
0.0184326171875,
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-0.02734375,
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0.0206298828125,
-0.10791015625,
-0.12890625,
-0.026611328125,
-0.049560... | 8,734 | 8734 | |
Congruence Proof using Wilson's Theorem
April 10th 2011, 02:15 PM
scherz0
Congruence Proof using Wilson's Theorem
Dear all,
I'm having trouble completing the proof for the following result, that requires Wilson's Theorem. I've shown this, along with my work, below.
Thank you!
scherz0
--------... | 5 | [
0.00127410888671875,
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-0.058837890625,
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0.010437... | 8,735 | 8735 | |
Can't quite get Project Euler problem #2 figured out
up vote 8 down vote favorite
3
I'm trying to learn the basics of C++ by going through some Project Euler problems. I've made it to...#2.
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 1... | 5 | [
-0.02734375,
0.0458984375,
-0.012939453125,
-0.044921875,
0.0047607421875,
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-0.0016937255859375,
-0.09619140625,
0.01397705078125,
-0.09033203125,
-0... | 8,736 | 8736 | |
Sufficient conditions for independence based on moments
up vote 3 down vote favorite
2
Let $P$ be the joint distribution of two random variables $X$ and $Y$, that both have support on $(0,1)$ (I am also interested in the case where $X$ takes values on $k$-dimensional simplex, but I
would be happy to start with the sim... | 5 | [
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0.047607421875,
0.047607421875,
0.053466796875,
0.004730224609375,
0.01013... | 8,737 | 8737 | |
Tiling a Floor
Date: 06/30/99 at 18:23:02
From: Melissa
Subject: Math conversion of yards and feet
If you have a 12 ft. x 15 ft. square room, how many square yards is
it? Is it 20? Also, for a 30 square foot room how many 8" x 8" tiles
would you need?
Thank you so much.
Date: 07/01/99 at 08:38:36
From: Doctor Ric... | 4 | [
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0.0294189453125,
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0.07275390625,
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0.0888671875,
0.0196533203125,
0.13574218... | 8,738 | 8738 | |
Muad`Dib
Axiom b : (nat -> nat) -> nat.Axiom b' : nat -> (nat -> nat).Axiom bijection : forall f, b' (b f) = f.Axiom bijection' : forall x, b (b' x) = x.Definition Stream A := nat -> A.Definition Map {A B} (f
: A -> B) : Stream A -> Stream B := fun sa => fun i => f (sa i).Definition l : Stream (nat -> nat) -> Stream na... | 5 | [
-0.0322265625,
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-0.00482177734375,
0.0274658203125,
0.072265625,
-0.01123046875,
0.05859375,
... | 8,739 | 8739 | |
Fund. Thm of Calc Question
Indeed, what do you do now? At the risk of sounding arrogant, I would have thought it was reasonably obvious that now you get expressions for f(2x) and f(3x) using the given rule $f(t)=\int^{2-t}_
{2t-5}\sqrt{1+u^4}\;du$. Then you construct the expression 2f(2x) - 3f(3x). Then you differentia... | 4 | [
0.08544921875,
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0.08544921875,
-0.001861572265625,
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-0.0223388671875,
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0.07421875,
-0.08251953125,
-0.042724609375,
-0.07470703125,
0.... | 8,740 | 8740 | |
How Long Until the Bomb Hits the Ground?
Date: 8/25/96 at 13:42:16
From: Anonymous
Subject: Plane Drops Bomb....
A bomber flying at 32,000 feet over level terrain drops a 500-pound
bomb.
a. How long will it take the bomb to strike the ground?
Using the position equations s = -16t^2 +vt + s
I got an answer of 44.721... | 4 | [
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0.05712890625,
0.016... | 8,741 | 8741 | |
a question on completeness within functional analysis
December 31st 2009, 09:29 AM #1
Newbie
Joined
Sep 2009
Posts
10
suppose I have a function f(x,t) where both x and t are continuous, I treat x as variable, but t as parameter, as t varies, I get a sequence of f(x), I want to know whether this sequence o... | 4 | [
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-0.004852294921875,
0.033447265625,
-0.059814453125,
0.033203125,
-0.0883... | 8,742 | 8742 | |
Confidence interval
June 20th 2011, 03:17 PM
piotr580
Confidence interval
The sulfur dioxide and nitrogen oxides are byproducts of fuel consumption. These are substances that can travel long distances and become acidic before settling in the form of "acid rain". The
following data were obtained for the sulfu... | 5 | [
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0.03125,
-0.06... | 8,743 | 8743 | |
Integration Application question
November 22nd 2009, 10:40 PM #1
Integration Application question
This may be hard to visualize without a graph, so I apologize in advance, but here is my question:
There is a circle with radius 'b' that is 'a' units away from the y-axis. if the circle is rotated about the y-a... | 5 | [
0.01336669921875,
0.036376953125,
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0.042236328125,
0.06884765625,
0.046142578125,
0.0155029296875,
0.01025... | 8,744 | 8744 | |
Roots Independent of lambda.
January 2nd 2011, 09:15 PM #1
Member
Joined
Dec 2010
Posts
81
Thanks
2
Roots Independent of lambda.
If $x^5+5\lambda x^4+(\lambda a-4)x^2-(8\lambda+3)x+\lambda a-2=0$. Then the value of $a$ for which the Given equation has one root Independent of $\lambda$
Here answe... | 5 | [
-0.03369140625,
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0.06396484375,
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0.0311279296875,
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0.08544921875,
0.014404296875,
0.000225067138671875,
0.0869140625,
0.038330078125,
0.024658203125,
-0.1010742... | 8,745 | 8745 | |
Chi-Square Test With Good Mean & Variance Estimate
February 2nd 2009, 12:10 AM #1
Newbie
Joined
Feb 2009
Posts
2
Chi-Square Test With Good Mean & Variance Estimate
Hello,
I have come across some computer code that is attempting (what looks like) a Pearson's Chi-Square Test for normality.
The pr... | 4 | [
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0.008056640625,
-0.0295410156... | 8,746 | 8746 | |
Markers for early detection of cancer: Statistical guidelines for nested case-control studies
Abstract
Background
Recently many long-term prospective studies have involved serial collection and storage of blood or tissue specimens. This has spurred nested case-control studies that involve testing some specimens
for v... | 5 | [
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0.02392578125,
-0.020629... | 8,747 | 8747 | |
The Azimuth Project
Contents
Idea
Analytical hydrodynamics, as it is understood here, means the investigation of fluid flows using tools from topology and differential geometry. These tools enable us to describe properties and
conservation laws of fluid flows that may be important for computational fluid dynamics, es... | 4 | [
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0.038330078125,
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ring+conditon=field
January 2nd 2009, 06:18 PM #1
Newbie
Joined
Oct 2008
Posts
22
ring+conditon=field
Let A be a ring with $p^n$ elements with characteristic p , $p$ prime, $n\geq 1$, and $f\in\mathbb{Z}[X]$ a polynom of degree $n$ ireductibile over $\mathbb{Z}_p$.If $f$ have a solution $a \in A$
the... | 4 | [
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... | 8,749 | 8749 | |
chemical reaction....
April 4th 2011, 02:07 PM
slapmaxwell1
chemical reaction....
ok im not sure how to set this problem up
two chemicals A and B are combined to form a chemical C. the rate or velocity of the reaction is proportional to the product of the instantaneous amounts of A and B not converted to c... | 5 | [
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0.... | 8,750 | 8750 | |
minimum values
June 11th 2008, 02:41 AM #1
Newbie
Joined
May 2008
Posts
4
This is a practice exam problem am stuck on
Find the max and min values of the fuction f(x)=x^3-9x^2+15x+3 on intervals [0,2]
The global extrema of a function on a closed interval are either calculus type local extrem... | 4 | [
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0.0144042968... | 8,751 | 8751 | |
Confusion with respect to a general angle
September 14th 2012, 01:38 AM
astartleddeer
Confusion with respect to a general angle
Hello,
I shall post the problem with the answer (s) as a given, but it's more of an explanation on what's just happened from which I'm after.
Anyway:
$-540 < 3x < 540$
... | 4 | [
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-0.01043701171875,
-0.0761... | 8,752 | 8752 | |
probability of winning dice rolling game
January 10th 2012, 05:00 AM
Maxim
probability of winning dice rolling game
Struggling with a difficult (for me, at least) probability problem. Suppose we play a game where we repeatedly roll a dice. First me, then you, then me, etc.
When I roll three fours in a row, ... | 4 | [
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0.05078125,
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Statistics
Making the Concepts of Power and Sample Size Relevant and Accessible to Students in Introductory Statistics Courses using Applets
C. M. Anderson-Cook and Sundar Dorai-Raj
Journal of Statistics Education Volume 11, Number 3 (2003), www.amstat.org/publications/jse/v11n3/anderson-cook.html
Copyright © 2003... | 4 | [
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TheoryCraft 101: Melee haste
TheoryCraft101 is here to introduce the more hardcore aspects of theorycrafting in a more casual approach. Have questions about attack speed? Do you know what PPM stands for? We have the answers
right here.
Another week, another article dealing with the math behind the scenes of
World of ... | 4 | [
-0.0498046875,
-0.00011730194091796875,
-0.051513671875,
-0.016357421875,
-0.00061798095703125,
-0.059326171875,
0.0272216796875,
0.029296875,
-0.0203857421875,
0.032470703125,
0.043212890625,
0.046142578125,
-0.04443359375,
0.0478515625,
0.1015625,
-0.004058837890625,
0.1181640625,
... | 8,755 | 8755 | |
Find the eigenvalues of a matrix
May 9th 2009, 06:51 PM #1
Member
Joined
Apr 2009
Posts
108
Find the eigenvalues of a matrix
Suppose a matrix A(n) = ( n x n ) whos (i,j) entry is 1 if n < = i + j <= n+1 and zero other wise....
find the eigenvalues of A(n)
what i got is that $f_n(\lambda)=\det(... | 4 | [
-0.050537109375,
-0.04541015625,
-0.07177734375,
-0.00848388671875,
-0.048583984375,
0.0027618408203125,
-0.00885009765625,
-0.003814697265625,
0.037353515625,
-0.01263427734375,
0.045654296875,
0.050537109375,
-0.032470703125,
-0.047119140625,
-0.03173828125,
-0.0986328125,
-0.03173... | 8,756 | 8756 | |
When is spectral norm of AB equal to that of BA?
up vote 4 down vote favorite
I have $A^{1/2} B A^{1/2} \preceq I$ for two PSD matrices $A$ and $B$, and I'd like to know if that implies $\|AB\|_2 \leq 1.$
The argument I was using to show this is that for any two square matrices $A$ and $B,$ it is always the case that... | 5 | [
-0.01544189453125,
-0.10205078125,
-0.087890625,
0.02197265625,
-0.025146484375,
-0.0081787109375,
-0.0126953125,
-0.0242919921875,
-0.0167236328125,
-0.0230712890625,
0.026611328125,
0.043701171875,
0.0361328125,
-0.0135498046875,
0.033447265625,
0.08056640625,
0.0634765625,
-0.02... | 8,757 | 8757 | |
Conic section
September 3rd 2008, 07:38 AM #1
Conic section
I know this is a conic section and that it is a circle, I can get that much but I have forgotten how to simplify it down to a variation of the standard formula, $x^2+y^2=r^2$. I would love for
someone to refresh my memory, Thank you.
$<br /> 4x^2... | 4 | [
0.0284423828125,
0.032470703125,
-0.0087890625,
0.06103515625,
0.0294189453125,
-0.020751953125,
-0.051025390625,
0.072265625,
0.06396484375,
-0.0859375,
0.054443359375,
0.00567626953125,
-0.0030059814453125,
0.039794921875,
0.031982421875,
0.07568359375,
-0.06201171875,
-0.0021514... | 8,758 | 8758 | |
Differential Equation
Find the differential equation for a parabola with latus rectum 4a and whose axis are parallel to x-axis.
The equation of the parabola satisfying the given requirements is (y-k)^2 = 4ax. So the solution of the DE is (y - k)^2 = 4ax .... (1) => y^2 - 2ky + k^2 = 4ax .... (2) Differentiate (2) with... | 4 | [
0.028564453125,
-0.0235595703125,
-0.00125885009765625,
-0.0673828125,
-0.062255859375,
0.0267333984375,
-0.010986328125,
-0.0052490234375,
0.05419921875,
0.11767578125,
0.09228515625,
-0.008544921875,
-0.0147705078125,
-0.008544921875,
-0.035888671875,
0.08447265625,
-0.011474609375... | 8,759 | 8759 | |
Finding expected value
January 4th 2012, 07:14 AM #1
Newbie
Joined
Jan 2012
Posts
2
Can anyone help me to solve part C of this question. I got stuck and really don't know how to find the expected value of the price.
Thank you
Last edited by mr fantastic; January 7th 2012 at 05:16 PM. Reason: Tit... | 4 | [
-0.04296875,
0.053955078125,
-0.00372314453125,
-0.0234375,
0.0206298828125,
0.02783203125,
0.09765625,
-0.046630859375,
0.028076171875,
0.0234375,
0.041259765625,
-0.060302734375,
0.0050048828125,
0.026611328125,
0.0140380859375,
-0.0301513671875,
0.0234375,
-0.032470703125,
-0.... | 8,760 | 8760 | |
Help with Stationary Points of a surface sadle points thing ..
May 5th 2006, 04:31 AM
AVVIT
Help with Stationary Points of a surface sadle points thing ..
i have an exam coming up and this is going to be in it i have a problem in my notes i cant seem to do can anyone help please
Find the stationary points o... | 5 | [
-0.01068115234375,
-0.0205078125,
-0.021728515625,
-0.05029296875,
0.01220703125,
0.00128936767578125,
0.01708984375,
-0.017333984375,
0.0537109375,
0.05224609375,
0.072265625,
0.08740234375,
0.00921630859375,
0.02880859375,
0.06201171875,
0.0267333984375,
-0.1123046875,
-0.0737304... | 8,761 | 8761 | |
Urgent. i have test tmr.Statistics
March 31st 2009, 01:17 AM
helloying
Urgent. i have test tmr.Statistics
the qn is in a table format.
Marks 10 20 30
no. of pupils 16 10 x
(a)if the median mark is 20, find the range of x. i am not sure how to do but my ans is 9 to 16. i think i am wrong
(b)find... | 4 | [
0.053955078125,
0.09765625,
0.031982421875,
-0.1103515625,
-0.0203857421875,
0.09130859375,
-0.0439453125,
0.1083984375,
-0.050537109375,
0.04052734375,
0.0849609375,
-0.03857421875,
0.07666015625,
0.059814453125,
0.037353515625,
0.04541015625,
-0.017333984375,
-0.0703125,
-0.003... | 8,762 | 8762 | |
nine-sided regular polygon
February 27th 2010, 09:27 AM #1
Member
Joined
Apr 2009
From
california
Posts
121
nine-sided regular polygon
Given the nine-sided regular polygon A1A2A3A4A5A6A7A8A9, how many distinct equilateral triangles in the plane of the polygon have at least two vertices in the set { A... | 4 | [
0.045166015625,
-0.0177001953125,
0.031005859375,
-0.032958984375,
-0.046630859375,
0.08056640625,
0.040283203125,
0.064453125,
-0.0074462890625,
0.0037078857421875,
-0.03515625,
-0.0390625,
-0.03125,
-0.03662109375,
0.0703125,
-0.00714111328125,
-0.029052734375,
-0.1806640625,
0... | 8,763 | 8763 | |
force problem
March 5th 2009, 07:17 AM #1
Newbie
Joined
Mar 2009
Posts
1
force problem
First of all,hi to everybody
newbie here
Anyway heres my problem,i need to lift a 70kg weight using a 100mm bore cylinder,see attached word doc
Thanks
One arm of 325 mm. It's not clear where the 70 kg... | 4 | [
-0.095703125,
0.08447265625,
-0.0111083984375,
0.0128173828125,
-0.0859375,
0.0177001953125,
0.0220947265625,
0.017333984375,
-0.025634765625,
0.09130859375,
0.0140380859375,
-0.05712890625,
0.01287841796875,
0.031982421875,
-0.0703125,
0.044921875,
-0.053466796875,
0.040283203125,... | 8,764 | 8764 | |
Reduction of order
September 1st 2010, 08:10 PM #1
Junior Member
Joined
May 2010
Posts
74
Reduction of order
(t)d^2y/dt^2 - (t+1)dy/dy + y = t^2
y1(t) = e^t y2(t) = t + 1
I have to do this is 2 different methods the first method was using variation of parameters which I could do but then when it... | 5 | [
-0.057373046875,
0.09912109375,
0.12158203125,
-0.01123046875,
0.018798828125,
-0.0238037109375,
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0.0111083984375,
0.005615234375,
0.040771484375,
0.054443359375,
0.041015625,
0.015869140625,
0.005615234375,
-0.01458740234375,
-0.052734375,
-0.024658203125,
0.0256347... | 8,765 | 8765 | |
Diophantine Equation
March 24th 2010, 04:26 PM #1
Newbie
Joined
Mar 2010
Posts
8
Diophantine Equation
I need help solving this Diophantine Equation I have. Its X^2+Y^2+1=3XY
The answers must be integers and the only one I found was x=1, y=1.
$x^2+y^2+1=3xy \implies y=\frac{3x\pm\sqrt{5x^2-4}}{2}... | 5 | [
-0.05517578125,
-0.04833984375,
0.03173828125,
-0.01708984375,
0.0262451171875,
0.01806640625,
0.05517578125,
-0.028564453125,
0.001495361328125,
-0.109375,
0.00732421875,
0.0159912109375,
-0.03466796875,
0.095703125,
-0.03271484375,
0.042724609375,
0.03466796875,
-0.04541015625,
... | 8,766 | 8766 | |
Maximal difference between k randomly drawn numbers from 1 to n – Looking for formula to sequence
up vote 1 down vote favorite
Hello! I have an interesting problem that seemed simple to me, but I'm unable to solve it on my own.
Suppose I am drawing k numbers out of n numbers labeled from 1 to n. Considering all $\bin... | 5 | [
0.0093994140625,
0.026123046875,
-0.0208740234375,
-0.09326171875,
-0.1240234375,
0.01708984375,
0.036865234375,
0.0296630859375,
0.0247802734375,
0.0245361328125,
-0.0830078125,
0.061279296875,
0.04833984375,
0.09375,
0.01495361328125,
0.083984375,
0.095703125,
-0.0625,
0.039794... | 8,767 | 8767 | |
Complex Numbers ( Roots)
June 8th 2009, 12:04 PM #1
Newbie
Joined
May 2009
From
Nevada
Posts
3
Complex Numbers ( Roots)
Find the three cubic roots of -1
possible answers
a> cos π/3 + i sin π/3, cos 3π + i sin 3π , cos 2π/3 + i sin 2π/3
b> cos π/3 + i sin π/3, cos π + i sin π, cos 5π/3 + ... | 5 | [
-0.1474609375,
-0.04931640625,
-0.041015625,
0.010986328125,
-0.033935546875,
0.004119873046875,
0.0068359375,
-0.01416015625,
0.048828125,
-0.0045166015625,
0.0263671875,
-0.0712890625,
0.029052734375,
0.05419921875,
0.0263671875,
-0.0206298828125,
-0.03076171875,
-0.0087280273437... | 8,768 | 8768 | |
bounding the absolute value of a trigonometric polynomial
up vote 2 down vote favorite
Consider a function $f:[0,1]\rightarrow \mathbb{C}$ and points $t_0,t_1,\ldots,t_n\in[0,1]$ \begin{equation*} f(t)=\prod_{k=1}^n\frac{(e^{2\pi i t}-e^{2\pi i t_k})}{(e^{2\pi i t_0}-e^{2\pi i t_k})} \
end{equation*} I would like to d... | 4 | [
-0.035400390625,
0.06884765625,
-0.037841796875,
-0.01202392578125,
0.0007781982421875,
0.04541015625,
0.05078125,
0.0869140625,
-0.0194091796875,
-0.02294921875,
0.019287109375,
-0.083984375,
0.05908203125,
-0.05615234375,
-0.0303955078125,
-0.0830078125,
0.07421875,
-0.0717773437... | 8,769 | 8769 | |
Symmetric subspace of linear operators
up vote 6 down vote favorite
3
This is a question that stemmed from fooling around with unitary t-designs.
Let
$$\mathbb{V} = \mathrm{span} \{\; U^{\otimes t}\; |\; U \in \mathrm{U}(d)\}$$
Where $\mathrm{U}(d)$ is the unitary group acting on $\mathbb{C}^d$.
What can we say ab... | 5 | [
-0.041748046875,
-0.0133056640625,
0.06103515625,
-0.036865234375,
-0.058349609375,
0.037353515625,
-0.0546875,
-0.0255126953125,
-0.07568359375,
-0.018798828125,
-0.04248046875,
-0.040283203125,
-0.06396484375,
-0.01458740234375,
-0.06982421875,
0.00677490234375,
0.06494140625,
-0... | 8,770 | 8770 | |
combo's
November 14th 2006, 06:48 AM
brian
combo's
how many diffrent combonations of 4 can I make with 20 numbers
EX:1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20
1-2-3-4 AND HOW WOULD I put them into combos
1-2-3-6
ETC....
November 14th 2006, 06:53 AM
ThePerfectHacker
Quote:
I... | 4 | [
0.032958984375,
0.023681640625,
0.03759765625,
-0.047607421875,
-0.1015625,
0.0556640625,
0.032958984375,
0.052734375,
-0.01165771484375,
-0.00927734375,
-0.0196533203125,
0.05126953125,
0.0732421875,
0.0030975341796875,
-0.00897216796875,
0.049560546875,
0.0169677734375,
-0.031738... | 8,771 | 8771 | |
How to prove the following distribution
March 11th 2014, 12:59 PM #1
Junior Member
Joined
Oct 2008
Posts
50
How to prove the following distribution
Hi,
I have the following problem I would like to get some input for. Let say I have a set of numbers from 1 to 500 : $A=\{1..500\}$ and i am preformin... | 5 | [
-0.02294921875,
0.040771484375,
0.0654296875,
-0.11279296875,
0.00830078125,
-0.0205078125,
0.0517578125,
-0.00775146484375,
0.03271484375,
0.09765625,
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0.11279296875,
0.03369140625,
0.01611328125,
0.0159912109375,
0.037353515625,
0.00125885009765625,
... | 8,772 | 8772 | |
Print all unique integer partitions given an integer as input
up vote 1 down vote favorite
1
I was solving a programming exercise and came across a problem over which I am not able to satisfactorily find a solution. The problem goes as follows:
Print all unique integer partitions given an integer as input.
Integer pa... | 5 | [
0.01239013671875,
0.01239013671875,
-0.000919342041015625,
-0.07275390625,
-0.083984375,
-0.05078125,
0.052001953125,
0.02783203125,
-0.08935546875,
-0.08837890625,
-0.09375,
0.013916015625,
0.056884765625,
0.0245361328125,
-0.09619140625,
-0.0079345703125,
0.0654296875,
0.03759765... | 8,773 | 8773 | |
Spanning angle,surface area,.....
January 23rd 2009, 04:51 PM
Diligent_Learner
Spanning angle,surface area,.....
Hello,
Can you help me in this question ,
In part a I must find the volume of cup(cylinder)
In part b I must find radius but how can I find Area
In part c ,d I don't know how can I ... | 4 | [
0.00531005859375,
0.00811767578125,
0.0064697265625,
-0.01263427734375,
-0.01348876953125,
-0.0098876953125,
0.058349609375,
0.09375,
-0.00830078125,
-0.044189453125,
-0.05029296875,
-0.041015625,
0.006988525390625,
0.04638671875,
-0.00038909912109375,
-0.07470703125,
-0.07275390625,... | 8,774 | 8774 | |
Diagonal
January 7th 2008, 12:14 AM
vivian
Diagonal
Consider a convex n-gon such that no 3 diagonals intersect at a single point. Draw all the diagonals (i.e. connect every pair of vertices by a segment).
a) How many intersections do the diagonals determine?
b) Into how many parts is the polygon divide... | 4 | [
0.06396484375,
-0.0189208984375,
-0.044677734375,
-0.0439453125,
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0.0693359375,
0.0159912109375,
-0.047119140625,
0.03125,
-0.033447265625,
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-0.02001953125,
-0.056396484375,
-0.01361083984375,
-0.00946044921875,
-0.005340576171875,
-0.11816... | 8,775 | 8775 | |
A Rumor Spreads
Associated Topics || Dr. Math Home || Search Dr. Math
A Rumor Spreads
Date: 04/01/99 at 22:42:49
... | 5 | [
0.0079345703125,
-0.0927734375,
0.0007476806640625,
0.049560546875,
0.032958984375,
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0.061279296875,
0.0260009765625,
0.01226806640625,
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0.05029296875,
0.0712890625,
0.0703125,
0.052734375,
-0.028076171875,
-0.07421875,
-0... | 8,776 | 8776 | |
Finding the limit
August 6th 2008, 04:26 PM
Craka
Finding the limit
Question is find the value of
[tex]
\mathop {\lim }\limits_{x \to 9} \frac{{t - 9}}{{3 - \sqrt t }}
/MATH]
This is as far as I get
$<br /> \mathop {\lim }\limits_{x \to 9} \frac{{t - 9}}{{3 - \sqrt t }} \\ <br /> = \mathop ... | 5 | [
-0.046142578125,
-0.07763671875,
-0.0240478515625,
-0.0498046875,
-0.0240478515625,
0.0150146484375,
-0.030029296875,
0.052490234375,
0.0113525390625,
-0.043212890625,
0.05517578125,
-0.047607421875,
-0.016357421875,
0.046630859375,
0.021728515625,
-0.0263671875,
-0.030029296875,
-... | 8,777 | 8777 | |
ib
#include <boost/math/distributions/logistic.hpp>
namespace boost{ namespace math{
template <class RealType = double,
class Policy = policies::policy<> >
class logistic_distribution;
template <class RealType, class Policy>
class logistic_distribution
{
public:
typedef RealType value_type;
typedef... | 4 | [
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-0.057373046875,
-0.014892578125,
-0.00933837890625,
-0.0020294189453125,
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0.0186767578125,
-0.03564453125,
0.00396728515625,
0.06396484375,
-0.06103515625,
0.0152587890625,
-0.0206298828125,
0.0024261474609375,
-0.0291748046875,
0.005... | 8,778 | 8778 | |
Trigonometry Question... (Possibly Using the Cosine Rule)
April 9th 2010, 11:05 PM
JadeKiara
Trigonometry Question... (Possibly Using the Cosine Rule)
Hello,
In this question, I am having trouble imagining what the diagram should look like. Am I finding the height of the triangle? I am feeling a little vexe... | 4 | [
0.007049560546875,
0.11083984375,
-0.07177734375,
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0.006683349609375,
0.006744384765625,
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0.08056640625,
-0.1025390625,
0.043701171875,
0.064453125,
-0.0093994140625,
0.00970458984375,
0.045166015625,
0.0260009765625,
0.09130859375,
0.0224609375,
-0.0... | 8,779 | 8779 | |
differentiation, parametric equation help
March 18th 2010, 08:40 AM #1
Super Member
Joined
Sep 2008
Posts
607
differentiation, parametric equation help
Find $\frac{dy}{dx}$ for the following, leaving your answer in terms of the parameter t.
$x = 2t-sin2t$
$y = 1-cos2t$
$\frac{dx}{dt} = 2-2... | 4 | [
-0.07275390625,
-0.03955078125,
0.019287109375,
0.0654296875,
0.0458984375,
-0.0308837890625,
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0.1064453125,
-0.00836181640625,
0.05078125,
0.07861328125,
-0.061279296875,
-0.01409912109375,
0.059326171875,
0.0023956298828125,
0.0252685546875,
-0.037353515625,
-0.03... | 8,780 | 8780 | |
Compressed air pipe sizing calculation
Lower pressure drop by installing the right compressed air pipe size. Calculate the correct pipe size for your compressed air system.
So, you want to know the correct pipe size for your compressed air installation? It easy, I'll explain how.
I still see too many places where th... | 4 | [
-0.00909423828125,
0.0791015625,
-0.010009765625,
-0.0181884765625,
0.00098419189453125,
-0.029296875,
-0.0216064453125,
0.15234375,
-0.047607421875,
0.01434326171875,
-0.044921875,
0.041748046875,
-0.0045166015625,
-0.0225830078125,
-0.0732421875,
0.0556640625,
-0.06689453125,
-0.... | 8,781 | 8781 | |
Analyticity of z
April 29th 2011, 05:50 AM #1
Senior Member
Joined
Apr 2010
Posts
487
Analyticity of z
I was reading through my text, and it stated that $z^n$ (for some integer n) was not analytic at n = 0. Why is this the case? Usually I'd substitute z = x + iy and then use the Cauchy-Riemann
equati... | 5 | [
-0.049560546875,
0.06591796875,
-0.072265625,
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-0.0201416015625,
0.027099609375,
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0.02685546875,
0.019287109375,
0.00787353515625,
0.06298828125,
0.0196533203125,
-0.061279296875,
-0.0196533203125,
-0.0698242... | 8,782 | 8782 | |
Calc 2 Alternating Series
November 2nd 2008, 08:25 PM #1
Member
Joined
Oct 2008
Posts
124
Calc 2 Alternating Series
1) Classify as absolutely convergent, conditionally convergent, or divergent.
The sum starting at k=1 to infinity of (sink)/k^3
2) The series satisfies the hypotheses of the alte... | 4 | [
-0.056640625,
-0.0208740234375,
0.0078125,
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0.00115966796875,
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0.0167236328125,
0.0196533203125,
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0.0556640625,
-0.006011962890625,
-0.1533203125,
-0.0732421875,
0.04345703125,
-... | 8,783 | 8783 | |
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Topic: Loxodromic midpoint
Replies: 8 Last Post: Jun 17, ... | 4 | [
-0.052490234375,
0.04541015625,
0.050048828125,
-0.056640625,
0.0281982421875,
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0.013671875,
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-0.040771484375,
0.053710937... | 8,784 | 8784 | |
Absolute error minimal supremum
July 22nd 2006, 01:39 PM #1
Absolute error minimal supremum
This is definition from book:
1. Number $\Delta (x') = \left| {x - x'} \right|$ represents absolute error of number $x'$
Then it says that in real life is often impossible to find out value of absolute error $\De... | 4 | [
0.0228271484375,
0.0125732421875,
0.0020294189453125,
-0.05810546875,
0.03759765625,
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0.08349609375,
-0.0478515625,
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-0.046875,
-0.022216796875,
-0.037841796875,
0.10009765625,
-0.0037841796875,
-... | 8,785 | 8785 | |
Infinite Primes
Date: Sun, 4 Dec 1994 19:40:57 -0800 (PST)
From: "Matthew K."
Subject: Largest Prime.
Hello,
I am a middle school math teacher. I have been sharing the history
of the search for the largest prime # with my students. Unfortunately, the
latest info I have is from 1979 (The Joy of Mathematics - T. Papp... | 4 | [
-0.028076171875,
-0.00909423828125,
-0.0167236328125,
0.025390625,
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0.0869140625,
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0.04052734375,
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0.0281982421875,
-0.048583984375,
-0.0751953125,
-0.049072265625,
-0.00098419189453125,
-0.0... | 8,786 | 8786 | |
isolating x when f(x) is a rational function of degree2 / degree1
September 20th 2012, 12:36 PM #1
Newbie
Joined
Sep 2012
From
canada
Posts
3
isolating x when f(x) is a rational function of degree2 / degree1
ex. y = (x^2 + 3) / (x - 1)
cant seem to isolate the x squared. also the eq. can be rewr... | 4 | [
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0.0203857421875,
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0.09765625,
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0.0260009765625,
0.07861328125,
0.007171630859375,
0.0029754638671875,
-0.01190185546875,
-0.029785... | 8,787 | 8787 | |
Reference for the Frolicher-Nijenhuis Bracket
up vote 8 down vote favorite
3
I'm looking for a (comprehensible) reference for the Frolicher-Nijenhuis bracket, hopefully more down to earth than Michor's books and different from Saunders's book on Jets.
I'm interested in it as this bracket seems the appropriate means t... | 4 | [
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0.005859375,
0.03125,
0.0264892578125,
-0.022216796875,
0.060302734375,
... | 8,788 | 8788 | |
Sound: Transmission
Archive site for Autodesk Ecotect Analysis educational resources, notes and tutorials
When a sound wave impacts upon the surface of a solid body, some portion of it's energy will be reflected, some absorbed and the rest transmitted through the body. The relative proportion of each
depends on the na... | 4 | [
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0.0029296875,
0.0257568359375,
-0.08203125,
-0.0703125,
0.12158203125,
0.045166015625,
-0.01300... | 8,789 | 8789 | |
Calculus Archive | November 04, 2011 | Chegg.com
Calculus Archive: Questions from November 04, 2011
• Anonymous asked
0 answers
• Anonymous asked
0 answers
• Anonymous asked
0 answers
• Anonymous2069 asked
2 answers
• sfetchit asked
1 answer
• AloofWizard7568 asked
1 answ... | 4 | [
0.0155029296875,
0.01806640625,
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0.011962890625,
0.0216064453125,
-0.031005859375,
0.01068115234375,
-0.04931640625,
0.024658... | 8,790 | 8790 | |
Some Summer Calculus Homework Help...
August 11th 2007, 05:35 PM
forkball42
Some Summer Calculus Homework Help...
Okay I have two questions that involve absolute value and inequalities that I am having some difficulty figuring/solving out....
Here they are,
Problem #1: Show that if |a-b|<s and |c-b|<t,... | 4 | [
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-0.032958984375,
0.08544921875,
-0.0... | 8,791 | 8791 | |
Isomorphic Binary Structure
September 20th 2011, 05:42 PM #1
Member
Joined
Dec 2010
Posts
92
Isomorphic Binary Structure
Problem: Determine whether the given map $\phi$ is an isomorphism of the first binary structure with the second.
$<\mathbb{R}^{2x2},\cdot>$ with $<\mathbb{R},\cdot>$ where $\phi(A... | 5 | [
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-0.0011444091796875,
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0.0025787353515625,
0.0191650... | 8,792 | 8792 | |
Prime ideals in the ring of germs of continuous functions
up vote 17 down vote favorite
7
We all know that the ring of germs of continuous functions at a point on, say $\mathbb{R}$, has a unique maximal ideal- namely, those functions that vanish at that point.
Can anyone think of a single other example of a prime ide... | 5 | [
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0.0169677734375,
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0.0203857421875,
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-0.0458984375,
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-0.... | 8,793 | 8793 | |
Prove that for all p, there exists a non-abelian group of order p^3.
November 19th 2011, 12:03 AM #1
Member
Joined
Aug 2008
Posts
249
Prove that for all p, there exists a non-abelian group of order p^3.
Using the conjugacy class equation: $|G| = |Z(G)| + \sum [G: C(x)]$ i want to show that there exists a... | 5 | [
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-0.01080322265625,
-0.00885009765625,... | 8,794 | 8794 | |
8,7,7,7,7,3,3,3,3,2 a Possible Graph?
March 8th 2008, 04:01 AM
emterics90
8,7,7,7,7,3,3,3,3,2 a Possible Graph?
Q: Can a graph of order 10 have one vertex of degree 8, four vertices of degree 7, four of degree 3, and one of degree 2?
That is, can the graph 8,7,7,7,7,3,3,3,3,2 exist?
I am told the answe... | 4 | [
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-0.0123291015625,
-0.00509643... | 8,795 | 8795 | |
what is antideriv. of arctan?
January 30th 2008, 03:18 PM
Tuugii
what is antideriv. of arctan?
hey,
I've got this problem:
[indefinite integral](1/(t^3+t))dt
I've used the partial fractions to split the integral into 2 separate parts, which becomes:
ln|t| + [indefinite integral](t/(t^2 + 1))d... | 5 | [
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0.03759765625,
-0.12890625,
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0.01019287109375,
-0.03906... | 8,796 | 8796 | |
Abstract Algebra (left cosets)
Suppose that H is a Normal Subgroup of G . a, b in G. Prove that (aH)(bH)=abH
Re: Abstract Algebra (left cosets)
This follows directly from the definition of a normal subgroup.
Re: Abstract Algebra (left cosets)
Can you show me a more detailed solution?
I know if H is... | 5 | [
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Norms over some subspaces
up vote 2 down vote favorite
Let $C$ be the set of all vectors of dimension $n$ such that each of its entries are one of $-1$, $0$ and $1$ and also that the every $v \in C$ has at least $\frac{n}{100}$ $1$'s and at least $\frac
{n}{100}$ $-1$'s. For a matrix $A$ (its dimensions are $\Lambda n... | 5 | [
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-0.071... | 8,798 | 8798 | |
Damped Spring problem
November 28th 2012, 05:39 AM
chizmin10
Damped Spring problem
The position y(t) of a damped spring satisfies the differential equation y''+2y'+5y=0. Determine y(t) when the initial position is y(0) and the initial velocity is y'(0)=1?
November 28th 2012, 07:41 AM
hollywood
Re: Damped Spri... | 4 | [
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-0.... | 8,799 | 8799 |