content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
New Features in Maple 16 – Differential Equations - Maplesoft
Ordinary Differential Equations (ODEs)
Using new algorithms, the dsolve command can solve new nonlinear ODE families of 1st, 2nd, 3rd and 4th order, all of them parameterized by arbitrary functions of the independent variable.
New solvable 1st order nonl... | 4 | [
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0... | 4,200 | 4200 | |
ggeomean - File Exchange - MATLAB Central
In some scientific works, once the data have been gathered from a population of interest, it is often difficult to get a sense of what the data indicate when they are presented in an unorganized
fashion.
Assembling the raw data into a meaningful form, such as a frequency distr... | 4 | [
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Spherical geometry.
Link/Page Citation
Many teachers approach the teaching of spherical geometry by considering the earth as a near spheric... | 5 | [
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Some CORDIC documentation [Archive] - Parallax Forums
Graham Stabler
10-10-2006, 04:22 AM
I need to do some real time trig for a differential odometer thing I'm working on, as such I've been struggling to get to grips with the CORDIC method. I finally got it and so for my own benefit I
added these comments to the Me... | 4 | [
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Pressurized Water Pipes with Pump Curve. Calculation uses Hazen Williams equation
┌──────────────────────────────┬──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ Circular Pressurized Water │Comput... | 5 | [
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two problems
December 1st 2008, 02:30 PM #1
Newbie
Joined
Dec 2008
Posts
1
two problems
hi there! finally i found a very helpful forum!
I need two "derivative" solutions of these problems:
1. from all right-angled triangles whose cathetes sum is 12, find the triangle which has the shortest hypo... | 5 | [
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MathGroup Archive: July 2004 [00390]
[Date Index] [Thread Index] [Author Index]
Re: Question about shape of histogram of minimal prime partition p's
• To: mathgroup at smc.vnet.net
• Subject: [mg49477] Re: [mg49440] Question about shape... | 4 | [
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Online Dictionary of Crystallography
Structure factor
From Online Dictionary of Crystallography
Facteur de structure (Fr), Fattore di struttura (It), 構造因子 (Ja).
Definition
The structure factor $\mathbf{F}_{hkl}$ is a mathematical function describing the amplitude and phase of a wave diffracted from crystal lattice... | 4 | [
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A limit involving binomial coefficients?
up vote 28 down vote favorite
8
Experimentation suggests the limit $$\lim_{n\rightarrow\infty} (-1)^n\sum_{k=1}^n(-1)^k{n\choose k}^{-1/k}=\frac{1}{2}\ .$$ Does somebody have an idea for (a start of) a proof?
Added: There seem to be variations: $$\lim_{n\rightarrow\infty} (-1)... | 5 | [
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Taylor polynomial...
December 4th 2009, 06:51 AM #1
Member
Joined
Mar 2008
Posts
182
Taylor polynomial...
Find the n-th degree Taylor polynomial $P_n(x)$of $f(x)=\ln x$at c=1. Calculate $P_3(1.1)$and estimate the accuracy of the approximation $\ln 1.1$≈ $P_3(1.1)$.
Any suggestions?
The Taylor s... | 4 | [
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Coefficient of Coupling
Coefficient of Coupling
The COEFFICIENT OF COUPLING of a transformer is dependent on the portion of the total flux lines that cuts both primary and secondary windings.
Ideally, all the flux lines generated by the primary should cut the secondary, and all the lines of the flux generated by the... | 4 | [
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0.083984... | 4,210 | 4210 | |
Cramer's Rule
December 29th 2008, 10:02 PM #1
MHF Contributor
Joined
Jul 2008
From
NYC
Posts
1,489
Cramer's Rule
As a participant in your school's community service project, you volunteer a total of 40 hours over the course of the school year. Your volunteer hours include serving at a soup kitchen, p... | 4 | [
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Just another question
July 22nd 2007, 12:25 PM #1
Newbie
Joined
Jul 2007
Posts
5
Just another question
A floor measures 12m by 8m. A rug covers one-third of the floor. The uncovered part of the floor forms a uniform (same width) strip around the rug. How wide is the strip?
Let $x$ be the width of th... | 4 | [
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... | 4,212 | 4212 | |
supremum infimum
November 12th 2010, 05:40 AM
transgalactic
supremum infimum
if f is bounded in a non empty group D and if c<0 then cf is bounded and
*-multiply
cf- c*f
then prove that:
sup(cf)(D)=c*inf(f)(D)
inf(cf)(D)=c*inf(f)(D)
the prove in the book says
L<=f<=M
cL>=cf>=cM
... | 4 | [
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Show that the following process will find a factorization.
April 28th 2010, 12:30 PM
NikoBellic
Show that the following process will find a factorization.
We know from a theorem that if an odd integer N equals a^2+b^2 = c^2+d^2 cannot be a prime. Show that the following process will find a factorization. Assume ... | 4 | [
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Ergodic Theory of Numbers
What do √2, π, and e have in common? Well, you're right, each is irrational! Perhaps more surprisingly, they also share the following trait: little is known about the distribution of digits in their
decimal expansions. In particular, it is not known if any of these constants (or any other fund... | 4 | [
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Mastering Physics Solutions: Where
Where’s the Energy?
Part A = smooth
Part B = a distance 2h/3 above the floor
Part C = -2mgh/3
Part D = -mgh
Part E = 1/2mv[i]^2 + mgh[i] = 1/2mv[f]^2 + mgh[f]
Part F = K increases; U decreases; E stays the same
Part G = sqrt(v^2 + 2gh)
Part H = 1/2mv[i]^2 + W[nc] = 1/2mv[f]^2
Part I ... | 5 | [
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IntroductionBasic Concepts of the Belief Function TheoryMain FunctionCombinationClassical DiscountingPignistic TransformationAn Improved Dissimilarity Measure about BBAsProblem DescriptionThe Existing Dissimilarity Measure MethodsBBM Type of Dissimilarity MeasureDistance Type of Dissimilarity MeasureComplex Type of Dis... | 4 | [
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MATH CONTEST PROBLEM
Problem 6
Let [] represent an arbitrary arrangement of the numbers []. Prove that if n is odd then the product [] is even.
[Problem submitted by Vin Lee, LACC Associate Professor of Mathematics. Source: the 1906 Eotvos Competition, a high school mathematics competition held in Hungary since 1... | 4 | [
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perpendicular
December 3rd 2008, 03:16 PM #1
Banned
Joined
Nov 2008
Posts
46
perpendicular
a)Find the eqution of the plane that contains points (2,-1,4) , (3,2,-1)
and perpendicular to the plane x+y+2z=3
b)Find the equation of the plane containing the point (3,-1,-5) and perpendicular to the pla... | 5 | [
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maple.html
chapter3.mw
Chapter 3
Mathematica code for exercise in section 3.3
22.
> f := (n, x) -> (ln(x+2)-x^(2*n)*sin(x))/(1+x^(2*n)) ;
> plot(f(2,x),x=0..1/2*Pi);
> plot(f(5,x),x=0..1/2*Pi);
> plot(f(10,x),x=0..1/2*Pi);
> plot(f(20,x),x=0..1/2*Pi);
The com... | 4 | [
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Taylor expansion - find limit value
October 30th 2010, 12:46 PM #1
Member
Joined
Sep 2010
Posts
95
Taylor expansion - find limit value
Find the limet value of the residue $R_n$ when $n \rightarrow \infty$ in $z=1$ to the function $\displaystyle \frac{e^z}{(z+2)(z-1)^n}$.
I shuffled around a bit and... | 5 | [
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0.040771484375,... | 4,221 | 4221 | |
Help getting started on a problem (intro linear algebra)
June 28th 2009, 12:28 PM #1
Help getting started on a problem (intro linear algebra)
Q: Suppose $A=\begin{bmatrix}a&b\\c&d&\end{bmatrix}$. Find conditions on $a,b,c,$and $d$ for which $A^{-1}=A$. Then find two different matrices, other than the identity mat... | 5 | [
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0... | 4,222 | 4222 | |
Re: Are there any good examples of FIRST () and FOLLOW ()?
jos@and.nl (Jos Horsmeier)
Mon, 22 Jun 1992 10:08:03 GMT
From comp.compilers
| List of a... | 5 | [
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Math Gets Around: The Humanities
By Matt, on December 6th, 2010
Unless you’re one of those suckers who goes to a school that administers final exams after the holidays (like I was), the few weeks after Thanksgiving can be quite a stressful time for students.
Between exams, final papers, and working out holiday trave... | 5 | [
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0.0017013549804... | 4,224 | 4224 | |
max. percentage error
January 6th 2010, 03:21 PM #1
Newbie
Joined
Jan 2010
Posts
3
max. percentage error
if r=5cm and h=12cm to the nearest mm, what should we expect the max. percentage error in calculating V=(pi)(r^2)h to be?
Thanks!
that's all the info that was given...
Actually there is... | 5 | [
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of the Two-Layer
┏━━━━━━━━━━━━━━━━━━━━┓
┃ ┃
... | 4 | [
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Exploring Advanced Math with Maxima
When I took Calculus in college, my Professor would give us substantial partial credit for test problems that we got wrong for minor arithmetic errors, and rightfully so, too. Sometimes even
simple-sounding problems resulted in a full page, or more, of calculations. Simply changing ... | 5 | [
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Magic Hexagon for Trig Identities
This hexagon is a special diagram
to help you remember some Trigonometric Identities
Sketch the diagram when you are struggling with trig identities ... it may help you! Here is how:
Building It: The Quotient Identities
Start with:
tan(x) = sin(x) / cos(x)
To help you remember
... | 4 | [
-0.052734375,
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Problem Set 5
Assigned: April 1
Due: April 15.
Problem 1
Machine learning algorithms can be very sensitive to how values of attributes are grouped together. Naive Bayes is one of the most sensitive.
Amy and Barbara are separately researching the question of what very rich people like to drink. They are both working... | 5 | [
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[SOLVED] bivariate RVs, joint and marginal densities, and transformations
October 26th 2008, 11:56 PM
joop
[SOLVED] bivariate RVs, joint and marginal densities, and transformations
Hello, I'd like some help on this tough problem. Thanks in advance!
Given the joint density:
$f_{XY}(x,y) = {1 \over 2\pi} ... | 5 | [
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... | 4,230 | 4230 | |
series convergent or divergent by ratio test
March 5th 2009, 09:27 AM #1
Member
Joined
Oct 2007
Posts
134
series convergent or divergent by ratio test
Please determine whether the series is convergent or divergent by ratio test.
Series (2n-1)/2^(3n)
First I solved that lim a(n+1)/an =1, so the te... | 5 | [
-0.0240478515625,
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Theory of Factorial Design: Single- and Multi-Stratum Experiments
Introduction
Linear Model Basics
Least squares
Estimation of σ
F-test
One-way layout
Estimation of a subset of parameters
Hypothesis testing for a subset of parameters
Adjusted orthogonality
Additive two-way layout
The case of proportional frequencies
... | 4 | [
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0.09228515625... | 4,232 | 4232 | |
Analytical Geometry help please!
April 10th 2007, 12:39 AM
Aqua
Analytical Geometry help please!
I really hope someone can help with this.
I am afrikaans so please excuse my english names.
We have a project in Maths asking us the following:
In a rectangle ABC, where a line connects C directly with... | 4 | [
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... | 4,233 | 4233 | |
probability using die and deck of cards? help!
December 7th 2009, 07:48 PM
oliviashea
probability using die and deck of cards? help!
At this current moment, I am completely stuck. I am currently in Business Statistics and have been thrown a last minute project that I just dont get? (Headbang)
I need help wi... | 4 | [
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Help with question~~
September 10th 2010, 06:09 AM #1
Newbie
Joined
Sep 2010
Posts
3
Hi everyone,
I need help with answering a question:
Question:
A pseudo-random number generates uniformly distributed random variables Xi on the interval [0,1]. This random number generator is to be used to ... | 4 | [
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change of variables
February 20th 2010, 07:00 PM #1
change of variables
The problem is to show that $\int^{x+ct+L}_{x-ct-L} g(s) \ ds = - \int^{x+ct}_{x-ct} g(s) \ ds$
where g is an odd 2L periodic function and g(L-x)=g(x)
I don't understand the following change of variables: $\int^{x+ct+L}_{x-ct-L} g(... | 4 | [
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Defining a revenue function and finding maximum revenue.
November 18th 2009, 04:16 PM
mathcalculushelp
Defining a revenue function and finding maximum revenue.
At a price of $8 per ticket, a theater group can fill every seat in the theater, which has a seating capacityof 990. For every additional dollar charged,... | 4 | [
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About lottery
July 16th 2010, 07:58 AM #1
Newbie
Joined
Jun 2010
Posts
5
About lottery
Hey, I was just wondering if there is way to tell how many times person needs to do lottery in order to have 50% chance to actually win the big prize. We use 39 numbers and must pick 7 of them.
Chances to win are 1... | 5 | [
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Mbit/sec versus GByte/day
When sizing communication links, especially costly satellite links, I am frequently asked to answer two questions.
1. Given a carrier capable of x Mbps throughput, how many gigabytes could I transmit in one day?
2. What is the minimum number of megabits per second (Mbps or Mbit/sec) necessa... | 4 | [
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... | 4,239 | 4239 | |
Tricky Applied Extrema Problem
July 13th 2010, 12:36 PM #1
Newbie
Joined
Jul 2010
Posts
13
A company needs to erect a fence around a rectangular storage yard next to a 250 m long side of a warehouse. They have 1000 m of available fencing. They will not fence in the side along the
warehouse but the fen... | 5 | [
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... | 4,240 | 4240 | |
Magic Square Update-2009
Contents
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┯━━━━━━━━━━━━━━━━━━━━━━┓
┃ Luo Shu Format M. S. │ Topographical Magic Squares │ How Many? ... | 4 | [
0.00011682510375976562,
-0.006591796875,
0.02880859375,
-0.03173828125,
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0.007476806640625,
0.0791015625,
0.01287841796875,
-0.038818359375,
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0.00106048583984375,
-0.075683... | 4,241 | 4241 | |
Earth Curriculum investigations:
Return to the Black Rock Forest Student Investigations Home Page
Earth Curriculum investigations:
An introduction to system dynamics a... | 5 | [
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... | 4,242 | 4242 | |
High School Mathematics-Physics SMILE Meeting
25 March 2003
Notes Prepared by Porter Johnson
Announcements:
• Porter Johnson announced that there will be a special lecture at IIT [111 Life Sciences Building; Math-Physics SMILE classroom] on Thursday 16 April at 4 pm. The speaker will be Professor Michael
S T... | 5 | [
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Find the solution that solves the initial condition.
Differential Equation: 2xy' - ln (x^2) = 0, y(1)=8 Initial Condition
Well, we have: $2xy' - \ln{(x^2)} = 0$ This is pretty simple to organize, using basic algebra you get: $2xy' = \ln{(x^2)}$ $y' = \frac{\ln{(x^2)}}{2x}$ Now, we integrate both sides: $\int y' ~dx = ... | 5 | [
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-0.05615234375... | 4,244 | 4244 | |
Sudoku-as-a-Service with Julia
Sudoku is (was?) an extremely popular number puzzle. Players are presented with a 9 by 9 grid, with some of the cells filled in with a number between 1 and 9. The goal is to complete the grid while
respecting these rules:
• Each row of the grid must contain each of the numbers 1 to 9 e... | 4 | [
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0.... | 4,245 | 4245 | |
N-balls covering n-balls
up vote 5 down vote favorite
1
This question is a follow-on question from:
Covering a unit ball with balls half the radius
The questions are these: Given an arbitrary dimension d, and a unit n-ball in d-dimensional Euclidean space...
• Is the fewest number of n-balls of equal radius (r < 1... | 5 | [
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at
NKF K/DOQI GUIDELINES 2000
C. APPENDICES (ADULT GUIDELINES)
Appendix V. Rationale and Methods for the Determination of the Protein ... | 4 | [
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ng
Sort by:
Per page:
Now showing results 1-6 of 6
In this activity students convert antilogs to logs, and logs to antilogs using scientific notation as an intermediate step. They will thereby develop a look-up table for solving math problems by
using logarithms. This is activity D2 in the "Far Out... (View More) Ma... | 4 | [
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... | 4,248 | 4248 | |
formula for sum of a series
12-22-2008, 11:03 PM #2
Within my grasp!
Join Date
Dec 2007
Posts
253
Rep Power
8
12-22-2008, 10:56 PM #1
Within my grasp!
Join Date
Dec 2007
Posts
253
Rep Power
8
formula for sum of a series
is there a formula for sum of a series (i.e. 1+3+5+7...991)
... | 4 | [
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Set closed under under multiplication
June 20th 2009, 07:12 PM #1
Set closed under under multiplication
Hello, this is a nice problem.
Suppose $S$ is a set of real numbers, closed under multiplication.
Suppose $S$ is partitioned into $A, B$, such that both $A,B$ are closed under multiplication of three e... | 5 | [
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0... | 4,250 | 4250 | |
Questions arising while studying for midterm.
October 14th 2010, 12:52 PM #1
Newbie
Joined
Oct 2010
Posts
9
Questions arising while studying for midterm.
I have been going through some practice questions online to prepare for my midterm and ran into a few questions I had problems with but for which there... | 5 | [
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Probability
February 3rd 2008, 07:29 AM #1
Member
Joined
Dec 2006
Posts
79
Probability
Poker dice is played by simultaneously rolling 5 dice.
a) Describe the sample space S; how many points are there?
6^5=7776 Is this correct?
b) Show that P(no two dice show the same number) = .0926
I... | 4 | [
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Help with this hard geometry problem!
Problem 14 Let ABC be a right angled triangle. A circle Г have side AC as its diameter meets hypotenuse AB at point E. A tangent line to Г at point E meets side BC at point D. Prove that a triangle
BDE is isosceles.
Hello, xxravenxx! Quote: 14. Let $ABC$ be a right triangle: . $\a... | 4 | [
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0.039794921875,
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Factoring Trinomials Lesson Plans & Worksheets :: 21 - 40
Factoring Trinomials Teacher Resources
Find Factoring Trinomials educational ideas and activities
Showing 21 - 40 of 95 resources
Students factor trinomials correctly. In this algebra lesson, students review the rules for factoring trinomials. They factor dif... | 4 | [
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0.043701171875,
0.06640625,
0.04052734375,
0.049072265625,
-0.054443359375,
-0.00872802734375,
-0.071... | 4,254 | 4254 | |
Proof by Induction
February 23rd 2011, 07:16 PM #1
Member
Joined
Oct 2010
Posts
133
Proof by Induction
I need some help figuring out the following proof that my professor put in my notes...
Let $f(x)=e^{-1/x^2}, xot=0$. Then, $f'(x)=\frac{2}{x^3}f(x), f''(x)=(\frac{-6}{x^4}+\frac{2}{x^3})f(x)$. Prov... | 4 | [
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0.0703125,
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0.... | 4,255 | 4255 | |
integration power rule
June 8th 2008, 07:30 PM #1
Newbie
Joined
Jun 2008
Posts
22
integration power rule
the integral of $\int\frac{x}{\sqrt{4-x^2}} dx$ is $-\sqrt{4-x^2} + C$.
this book shows a middle step that i don't understand: $-\frac{1}{2} \int (4-x)^{-\frac{1}{2}}(-2x) dx$
i'm trying to ... | 5 | [
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0.0125732421875,
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-0.0... | 4,256 | 4256 | |
IntroductionPrincipleThe phase difference at the TIR effectThe basic principle of SPR technologyThe basic principle of the displacement probe (DP)Experimental Apparatus and ResultsDiscussionThe First Order ErrorSecond Harmonic ErrorConclusionsReferences and NotesFigures
As is well known, small displacement measurement ... | 4 | [
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0.048828125,
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0.0170... | 4,257 | 4257 | |
On the Ellipse
An ellipse can be defined in several different ways. For example, it may be defined as a “section” (i.e., a planar slice) of a cone, from which we get the name “conic sections”. This is how the
ellipse (and hyperbola and parabola) were originally defined by Menaechmus and later by Apollonius. Alternativ... | 4 | [
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-0.015136718... | 4,258 | 4258 | |
Solve the Mathematical Model (Population Differantial Equation)
February 11th 2009, 04:39 PM
cowracer3
Solve the Mathematical Model (Population Differantial Equation)
Given a population differential equation model
dy/dt = y(y-1)(y-3) and y(0)=yo
Solve the following:
solve the mathematical model with... | 4 | [
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Penrose Tilings
Penrose Tilings and Quasicrystals
Eric Hwang
« | 1 | 2 | 3 | 4 | »
To enforce the non-periodic tiling, the tiles can only be joined in certain ways. For example, it would be simple to join them so that they form the rhombus and tile periodically. To make sure kites
and darts are joined in legal ways... | 4 | [
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C2 Question on Differentiation
Hi All,
I'm studying C2 differentiation and think I've just about cracked it, but I just can't work out the 'maximum' bit at the end.
Basis of question is that Perimeter of shape of rectangle with semicircular top is 40cm, and that area = 40r-2r^2-1/2Pir^2. I've worked it all ... | 4 | [
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-0.006561279296875,... | 4,261 | 4261 | |
scalar multiplied by a vector proof
February 9th 2011, 07:21 PM #1
scalar multiplied by a vector proof
Show that if c is a scalar then ||cu||=|c|||u||
let u $=(x_1, x_2, ..., x_n)$ then ||u||= $\sqrt{x^2_1+x^2_2+...+x^2_n}$
cu= $(cx_1, cx_2,...,cx_n)$ then ||cu||= $\sqrt{(cx_1)^2+(cx_2)^2+...+(cx_n)^2}=\... | 4 | [
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0.03515625,
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0.0025634765625... | 4,262 | 4262 | |
Law of Cosines Lesson Plans & Worksheets :: 41 - 60
Law of Cosines Teacher Resources
Find Law of Cosines educational ideas and activities
Showing 41 - 60 of 117 resources
In this trigonometry activity, students apply the Law of Sines and Cosines to solving for missing sides of a triangle. There are 5 questions with ... | 4 | [
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0.00245666503... | 4,263 | 4263 | |
Math Help
March 19th 2008, 01:17 PM #1
Member
Joined
Dec 2007
Posts
80
bearing
Im not sure how to draw this and so i havnt been able to try and solve it yet, so if you could help me draw it and give a few hits that would be great thnx
A ship travelling with a constant speed and direction is signhte... | 4 | [
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Index insurance, probabilistic climate forecasts, and production.
Link/Page Citation
ABSTRACT
Index insurance and probabilistic seasonal forecasts are becoming available in developing ... | 4 | [
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Reducing AUC to Pointwise Regression
Charles Elkan
gave a great talk at the
LA machine learning meetup yesterday
. Before the talk we were discussing ranking problems with AUC loss. It is known that
reducing to pairwise classification
results in an AUC regret bound of $2 r$, where $r$ is the regret on the induced ... | 4 | [
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-0... | 4,266 | 4266 | |
Inner Regular Measure Problem
December 28th 2010, 08:01 PM #1
Member
Joined
Mar 2010
Posts
98
Inner Regular Measure Problem
Hey everyone.
The following problem is from Papa Rudin, exercise 2.15; I'm trying to rephrase it so that you won't have to look it up, but there's a chance that the rephrasing ... | 5 | [
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Solving congruences
May 31st 2009, 05:22 PM
Nerdfighter
Solving congruences
I understand that to solve ax congruent b modulo n means finding integers c and m such that ax congruent b modulo n is equivalent to x congruent c modulo n.
But.... I don't know how to get there.
May 31st 2009, 11:16 PM
Gamma
... | 5 | [
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-0.0021209716796875... | 4,268 | 4268 | |
Project Euler 26: 1/d with the longest recurring cycle in C#
Project Euler 26: Find the value of d < 1000 for which 1/d contains the longest recurring cycle
Written by Kristian on 5 February 2011
Topics: Project Euler
Problem 26 of Project Euler reads
A unit fraction contains 1 in the numerator. The decimal rep... | 5 | [
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0.025390625,... | 4,269 | 4269 | |
Group theory questions
May 19th 2011, 03:15 AM #1
Member
Joined
May 2011
Posts
169
Group theory questions
I did a test recently and I struggled on these questions
(1) Prove in any group (x^-1)^-1=x
I said (x^-1)^-1=a so a^-1(x^-1)^-1=e
so (x^-1*a)^-1=e implying x^-1*a=e, implying a=x.
... | 5 | [
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Treatise On Analysis Vol-Ii
24 XII TOPOLOGY AND TOPOLOGICAL ALGEBRA
Clearly, if / is lower semicontinuous at XG , then — / is upper semicon-
tinuous at this point. Hence we need consider only lower semicontinuous
functions.
If cp is a mapping of a topological space F into E which is continuous at a
point y0 ... | 4 | [
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The Mathematical Milkman of Puzzleland - Solution
The Puzzle:
The school children were returning to their homes when they met the mathematical milkman, who propounds the following problem:
In one of the two cans there is milk which is so rich with cream that it becomes absolutely necessary to dilute it with a little... | 4 | [
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Double integral..ln
November 13th 2010, 02:55 PM #1
Junior Member
Joined
Sep 2010
Posts
32
Double integral..ln
Hi all,
I need help with the following task:
Calculate
∫∫ ln(1+x^2+y^2) dxdy
D
where D is: (x,y); 1 <=x^2+y^2<=2
(<= means bigger than or equal to)
I think I sho... | 4 | [
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-0.00891113281... | 4,273 | 4273 | |
density function question..
February 2nd 2010, 02:57 AM #1
MHF Contributor
Joined
Nov 2008
Posts
1,401
density function question..
$Y\sim U(-2\pi,2\pi)$
find the density function of z=tan(Y)
?
i had a similar question
X~U(0,1)
find the density function of W=a+bx
the solution is
... | 5 | [
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Support Vector Machines
From Wikibooks, open books for an open world
Support vector machines (SVMs) are a set of related supervised learning methods that analyze data and recognize patterns, used for classification (machine learning)|classification and regression
analysis. The original SVM algorithm was invented by Vl... | 4 | [
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0.0049743652343... | 4,275 | 4275 | |
Piecewise and Trig Limits
September 17th 2008, 01:07 AM #1
Newbie
Joined
Sep 2008
Posts
7
Piecewise and Trig Limits
This one has got me totally stumped:
$<br /> f(x) = \left\{ \begin{array}{rcl}<br /> 2x^2 - 3x + 1 & \mbox{} & x<-1 \\ ax +b & \mbox{} & -1\leq x <{2} \\ 8x + 5 & \mbox{} & x \geq {2}<b... | 5 | [
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... | 4,276 | 4276 | |
Constant Rule Lesson Plans & Worksheets | Lesson Planet
Constant Rule Teacher Resources
Find Constant Rule educational ideas and activities
Showing 1 - 20 of 61 resources
This video covers the differential notation dy/dx and generalizes the rule for finding the derivative of any polynomial. It also extends the notio... | 4 | [
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0.06103515625,
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0.0566406... | 4,277 | 4277 | |
Elliptic Curves
The Weil Pairing II
There is an alternative way to define the Weil Pairing. To prove the equivalence of definitions, we first show that the pairing is nondegenerate and bilinear. Then this means the pairing is
completely determined by its value on $e(P,Q)$ for some basis $P,Q$ of $E[m]$, so in fact all... | 4 | [
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0.0154418945... | 4,278 | 4278 | |
Lesson Tutor : Algebra : Grade 9 : Using Equations to Solve Puzzles
Objective(s): By the end of this lesson the student will be able to:
set up an equation that "matches" in numbers what the puzzle expr... | 4 | [
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0.06591... | 4,279 | 4279 | |
Looking for help
Can anyone help me with this question. 1998 x abc = cba x 8991?
That is not a "question", it is an equation. The question is "what do you want to do with that equation?"
Two values: abc ={81, 891} Other values up to 1000,000 abcdef= {81, 891, 8181, 8991, 81081, 89991, 810081, 818181, 891891, 899991} ... | 5 | [
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-0.0179443359375... | 4,280 | 4280 | |
Homework Help
Posted by esmat on Monday, June 13, 2011 at 5:35pm.
. Consider a large number, N(0)
, molecules contained in a volume V
(0)
. Assume that
there is no correlation between the locations of the molecules (ideal gas). Do not
use the partition function in this problem.
(a) Calculate the probability P (V... | 5 | [
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-0.0517578125,
0.0127563... | 4,281 | 4281 | |
e
Learning Resources
Example CD11-4: Measuring Gas Phase Diffusivities
A diffusion cell is used to measure binary molecular diffusivities. It consists of a chamber closed at one end by a fine porous glass disc.
In use, the chamber is filled through the stopcock with a pure gas, the stopcock is closed, and the cell i... | 4 | [
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0.04052734375,
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-0.004547119... | 4,282 | 4282 | |
Chapter 11
Philosophy 2340
Symbolic Logic
Advice ... | 5 | [
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0.00445... | 4,283 | 4283 | |
Rate Problem Involving Changing Height..
August 26th 2012, 10:14 AM
kspkido
Rate Problem Involving Changing Height..
Hello So first this is the problem:
A Swimming pool is 20 ft. wide, 40 ft. long, 3 ft. deep at the shallow end and 9 ft. deep at it's deepest point. A cross section is shown in the figure. If... | 4 | [
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Items tagged with nonlinear
Dear Friends
I have a problem in CPU time in MAPLE.
I write the codes in maple related to the nonlinear heat conduction problem in one dimension by Collocation method, but after 30 minutes no solution has been observed!!!
My codes are for N=4!, i.e., I have 25 equations with 25 unknowns!!... | 4 | [
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need help in solving equation usin matlab
July 16th 2008, 02:10 AM #1
Newbie
Joined
Jul 2008
Posts
1
Zthjsl(timel)=(Rjs1*(1-exp(-timel/taujs1)))+(Rjs2*(1-exp(-timel/taujs2)))+(Rjs3*(1-exp(-timel/taujs3)))+(Rjs4*(1-exp(-timel/taujs4)))+(Rjs5*(1-exp(-timel/taujs5)))+(Rjs6*(1-exp(-timel/taujs6)));
Zthjs... | 4 | [
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partial fraction
To learn, in general, how to work with partial fractions, try here. Then, since you haven't been able to start either of these, I'll give you the beginning: The denominators are (x^2 + 1), (x + 2),
and (x + 2)^2. So: . . . . . $\frac{1}{(x^2\, +\, 1)(x\, +\, 2)^2}\, =\, \frac{Ax\, +\, B}{x^2\, +\, 1}\,... | 4 | [
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Homework Help
Posted by Anonymous 11/9/13 on Saturday, November 9, 2013 at 2:14pm.
The table below shows the LOS for a sample of 11 discharged patients. Using the data in the table, calculate the mean, range, variance, and standard deviation, and then answer questions e and f.
Round the variance and standard deviation... | 4 | [
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ut
Calculus with Anticommuting Variables
Q: How can I perform matrix calculus (products, determinants, and so on) with anticommuting variables?
A: Daniel Lichtblau (danl@wolfram.com) answers.
Say you encapsulate all anticommuting variables with the head Plus, pull out "scalars" (everything not with head ... | 4 | [
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Need help Confused
October 8th 2005, 03:27 PM #1
Newbie
Joined
Oct 2005
Posts
8
Need help Confused
I have been trying to do this problem and I do not know where to start.
What is throwing me off is y/4. I have looked in my textbook and I can not find any example of this problem. I hope someone can he... | 4 | [
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String counting questions
February 25th 2010, 10:17 AM #1
Member
Joined
Jan 2010
Posts
232
String counting questions
There are two parts to this one. They are listed word for word.
1. How many 12 lowercase letter strings are there that contain at least 2 vowels (a vowel is one of {a,e,i,o,u})?
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[SOLVED] Complex Analysis Proof
Write $f(x+iy) = u(x,y) + iv(x,y)$. We know that $v(x,y)=0$ by hypothesis. But, $u_x = v_y \implies u_x = 0 \implies u(x,y) = g(y)$. And, $u_y = -v_x \implies u_y = 0 \implies u(x,y) = h(x)$.
Therefore, $g,h$ need to be constant functions. And so $u(x,y) = c$.
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e
How to solve compound interest problems.
This topic is part of the TCS FREE high school mathematics 'How-to Library'. It shows you how to solve compound interest problems.
(See the index page for a list of all available topics in the li... | 4 | [
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Graphing Trigonometric Functions Lesson Plans & Worksheets | Lesson Planet
Graphing Trigonometric Functions Teacher Resources
Find Graphing Trigonometric Functions educational ideas and activities
Showing 1 - 20 of 22 resources
In this graphing trigonometric functions worksheet, students graph one function: y=-3cos(... | 4 | [
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1-Dimensional Heat Initial Boundary Value Problems 2: Sturm-Liouville Problems and Orthogonal Functions
Sturm-Liouville Problems
The homogeneous boundary conditions of 1D heat conduction problem are given by
\begin{align*}
-\kappa_1u_x(0,t)+h_1u(0,t)&=0,\ t>0\\
\kappa_2u_x(L,t)+h_2u(L,t)&=0,\ t>0
\end{align*}
(See he... | 5 | [
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e Al
A Gröbner Free Alternative for Polynomial System Solving Grégoire Lecerf
Laboratoire GAGE, École polytechnique
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Particle projected at an angle to the horizontal.
February 6th 2013, 04:19 PM #1
Particle projected at an angle to the horizontal.
Hello,
I'm sorry that this is a bit of a rambling question. I'm having difficulty understanding how to assign the signs in these problems. The rest of the math I can do and I'm f... | 4 | [
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Sum of probability distributions - File Exchange - MATLAB Central
Description
SUMPDF Probability distribution of the sum of distributions
[S,P,C]=SUMPDF(X1,P1,N1,X2,P2,N2,...) will return the distribution of the sum of distribution P1, at values at X1, N1 times plus the distribution P2, at values in X2, N2 times...
T... | 5 | [
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Teacher Page: Rocky Icy Moon
Hawai'i Space Grant Consortium, Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, 1996
┌──┬──────────────────────────────────────────────────────────────────────────────────────┐
│ │ How Much Rock is in an Icy Moon? ... | 4 | [
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