content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Solids of revolution, spring constants, and limits
December 14th 2011, 09:01 AM #1
Newbie
Joined
Dec 2011
Posts
3
Solids of revolution, spring constants, and limits
These are some problems that I'm having trouble with from a review packet. I know the answers, but I don't know how to do them. I would grea... | 5 | [
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0.0166015625,
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e
How to simplify more difficult algebraic expressions.
This topic is part of the TCS FREE high school mathematics 'How-to Library', and will help you to simplify more difficult algebraic expressions.
(See the index page for a list of all avail... | 4 | [
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0.1... | 2,701 | 2701 | |
Lovefilm, yes or no?
Paul Makepeace paulm at paulm.com
Wed Apr 14 19:12:52 BST 2010
On Wed, Apr 14, 2010 at 10:29, Abigail <abigail at abigail.be> wrote:
> On Wed, Apr 14, 2010 at 09:47:14AM -0700, David Alban wrote:
>> On Wed, Apr 14, 2010 at 9:36 AM, Merijn Broeren <merijnb at iloquent.com> wrote:
>> > Does 128! en... | 5 | [
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-0.044677734375,... | 2,702 | 2702 | |
Math Help
December 4th 2012, 10:10 AM #1
Newbie
Joined
Nov 2012
From
Sweden
Posts
2
proportion
Hi
Hope you can help me with my problem. Hope you understand my English
A phone company asks 50 people about their waiting time, when they call the customer service.
The sample mean is 8.4 minu... | 5 | [
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make p the subject.
September 12th 2009, 03:57 AM
Khonics89
make p the subject.
find an explicit formula for P in terms of t....
I'm struggling with this one :(
I know we can do dt/dP = 1/p(2-0.01p)
then apply partial fractions.. and then integerate and then .... thats when its gets abit tricky.
... | 5 | [
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Basic Limits Help
May 17th 2010, 05:56 AM #1
Member
Joined
Dec 2009
Posts
96
Basic Limits Help
Reviewing for the final exam, forgot a couple simple rules.
To solve a limit algebraically
1. lim x -> -5 (x^2 +3x - 10) / (x + 5)
If you plug in -5 it is 0/0 so I factored the top to (x+5)(x-2) ... | 4 | [
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Derivative of relative entropy
March 15th 2012, 03:32 AM #1
Member
Joined
Sep 2010
Posts
86
(Solved) Derivative of relative entropy
Hello,
I am currently confused over relative entropy as it is defined here: Relative Entropy -- from Wolfram MathWorld
Rewritten in a more tidy fashion, I have:
... | 4 | [
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Probability
June 2nd 2008, 09:28 AM #1
Newbie
Joined
Apr 2008
Posts
9
Probability
Hi! Can somebody explain me please how to solve these:
a) Calculate the probability of getTing at least one die showing a 5 using two dices?
b) Calculate the prob. of getting the sum 10 and none of the dices are sho... | 4 | [
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0.... | 2,707 | 2707 | |
How is it possible to find the other root?
January 15th 2010, 10:56 PM #1
Member
Joined
Oct 2008
Posts
157
How is it possible to find the other root?
In the cubic equation $x^3 + px^2 + qx + 26 = 0$ the constants p and q are real and $2+3i$ is a root. I want to find the other two roots but I'm a little l... | 5 | [
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primitive root of unity
April 24th 2010, 09:31 PM #1
Junior Member
Joined
Oct 2009
Posts
56
primitive root of unity
Let x=e^(2β/13i), a primitive 13th root of unity.
Find a subfield K of Q(X) with (Q(x):K)=3.
Find a subfield L of Q(X) with (Q(x):L)=4.
Let $\zeta$ be the primitive 13th roots ... | 5 | [
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... | 2,709 | 2709 | |
Is there a universal property for Witt vectors?
Take the 2-minute tour Γ
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
Do the Witt vectors satisfy a universal property?
[Pedant hat on: any object has a universal property, it's unversal for ... | 4 | [
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Fourier transform - odd funktion
November 10th 2011, 01:55 PM
liquidFuzz
Fourier transform - odd funktion
I'm transforming f(x) = 1-x trying to do so in an even and odd fashion... I think I get it right for the even, but I get stuck while tinkering with the odd one.
The period is 2, odd distribution.
$... | 4 | [
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How to Calculate your GPA (Grade Point Average)
HOW TO CALCULATE YOUR GPA (GRADE POINT AVERAGE) β Semester System
There are two grade point averages that are relevant to your academic standing. Your semester grade point average is the average of your grades for any one given semester of your college career. Your
semes... | 4 | [
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Algebra Lesson - Transposition
This may be your first algebra lesson. In case you are rather uncomfortable with algebra, you may want to first go through Basic Algebra - An Introduction - that would give you a good foundation
before this lesson.
This Algebra Lesson introduces a technique known as 'transposition'. Thi... | 4 | [
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Discrete Random Variable and Expectation
October 27th 2008, 09:39 AM #1
Discrete Random Variable and Expectation
Let X be a discrete random variable that can only take non-negative integers (i.e. $R_x \subset \mathbb{N}$).
Show that $\mathbb{E}(X) = \sum_{x=0}^{\infty}\mathbb{P}\{X>x\}$.
I don't know ho... | 5 | [
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st: RE: Standard Errors of Regression Coefficients
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
st: RE: Standard Errors of Regression Coefficients
From "Millimet, Daniel" <millimet@post.cis.smu.edu>
To <statalist@hsphsun2.harvard.edu>
Subject st: RE: Standard Errors of Regressio... | 4 | [
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Emptying a water tank (Inverted circular cone)
September 20th 2009, 12:13 PM
Grimey
Emptying a water tank (Inverted circular cone)
ok, i drew out a diagram and I have no idea how or where to start this problem. Please help guide me so I can learn how to do it...
A water tank has the shape of an inverted cir... | 5 | [
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Inverse cosine of i
The first thing I can think of is to use the power series of arccos.
Let $\displaystyle z = \cos^{-1}{(w)}$, then \displaystyle \begin{align*} \cos{(z)} &= w \\ \frac{e^{i\,z} + e^{-i\,z}}{2} &= w \\ e^{i\,z} + e^{-i\,z} &= 2w \\ \left( e^{i\,z} \right)^2 + 1 &= 2w\,e
^{i\,z} \\ \left( e^{i\,z} \ri... | 5 | [
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... | 2,717 | 2717 | |
nding
Understanding Velocity Versus Time Graphs
There are two types of information that one normally wishes to find from a velocity versus time graph. The first and simplest objective is finding the acceleration. The second is to find a po... | 4 | [
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[SOLVED] Analytic Geometry Q9
January 31st 2009, 09:35 PM #1
[SOLVED] Analytic Geometry Q9
Question:
A line passes through the points: $A(1,1)$ & $B(5,7)$. Find the coordinates of $P$ if $P$ is three times as far from $A$ as from $B$.
Attempt:
I know that I can find the points of $P$ using this formu... | 4 | [
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-0.0238037... | 2,719 | 2719 | |
Re: st: Marginal effects
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: Marginal effects
From Maarten buis <maartenbuis@yahoo.co.uk>
To statalist@hsphsun2.harvard.edu
Subject Re: st: Marginal effects
Date Sat, 22 Mar 2008 12:18:28 +0000 (GMT)
--- JosΓ© C. <jcreu@bol.com.... | 5 | [
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Max and min of absolute value interval
September 29th 2007, 10:41 PM #1
Junior Member
Joined
Sep 2007
Posts
31
Max and min of absolute value interval
Let $f(t)=3-|t-3|$ on the interval $[-1,5]$. Find the absolute maximum and absolute minimum of $f(t)$ on this interval.
The absolute max occurs at $t ... | 4 | [
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0.0859375,
-0.0... | 2,721 | 2721 | |
Domain Question
July 9th 2007, 01:41 PM #1
Senior Member
Joined
Jul 2007
Posts
290
Domain Question
How do I find the Domain of
x+4 / square root of 3x+1?
Square root of 2x+5?
X / X(X-3)?
I have a few more questions on the bottom. Thanks
Last edited by JonathanEyoon; July 9th 2... | 4 | [
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Exceptional Lebesgue densities and random Riemann sums
Grahl, J.; (2012) Exceptional Lebesgue densities and random Riemann sums. Doctoral thesis, UCL (University College London).
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
850Kb
Abstract
We will examine two topics in this thesis. Fir... | 4 | [
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Re: st: large numbers in comb(n,k) function: no success
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: st: large numbers in comb(n,k) function: no success
From wgould@stata.com (William Gould, StataCorp LP)
To statalist@hsphsun2.harvard.edu
Subject Re: st: large numbers in comb... | 5 | [
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At what point does this parametric curve cross itself?
December 5th 2013, 08:50 AM #1
Super Member
Joined
Nov 2008
Posts
597
At what point does this parametric curve cross itself?
Problem:The parametric curve r = (βt^2 β 4t β 4, β3cos(Οt), t^3 β 28t) crosses itself at one and only one point P.a) What are... | 5 | [
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Electromagnetic approach to laser resonator analysis
Β« journal navigation
Electromagnetic approach to laser resonator analysis
Optics Express, Vol. 13, Issue 16, pp. 5994-5999 (2005)
http://dx.doi.org/10.1364/OPEX.13.005994
Abstract
An electromagnetic method based on rigorous diffraction theory of gratings is intro... | 4 | [
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Personal opinions about graphical models 1: The surrogate likelihood exists and you should use it.
When talking about graphical models with peopleΒ (particularly computer vision folks) I find myself advancing a few opinions over and over again.Β So, in an effort to stop bothering people at
conferences, I thought Iβd w... | 4 | [
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0.0267333984375,
0.049072265625,
-0.004608154296875,
0.07080078125,
0.08349609375,
-0.02734375,
0.08203125,
0.11279296875,
-0.0498046875,
-0... | 2,727 | 2727 | |
METHOD TO CHECK AND CONTROL A ROLLER BENDING MACHINE FOR CONTINUOUSLY BENDING AN ELONGATED WORKPIECE AT VARIABLE CURVATURE RADII, AND MACHINE SO CONTROLLED - CML INTERNATIONAL S.P.A.
Title:
METHOD TO CHECK AND CONTROL A ROLLER BENDING MACHINE FOR CONTINUOUSLY BENDING AN ELONGATED WORKPIECE AT VARIABLE CURVATURE RADII,... | 4 | [
-0.10302734375,
0.04052734375,
-0.09619140625,
0.0164794921875,
-0.10595703125,
-0.044921875,
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0.0888671875,
-0.0284423828125,
-0.0235595703125,
0.078125,
0.0130615234375,
0.045654296875,
-0.029052734375,
-0.08544921875,
-0.016357421875,
0.0179443359375,
0.0388183593... | 2,728 | 2728 | |
long division with a trinomial
February 26th 2011, 04:18 PM #1
Junior Member
Joined
Jan 2010
Posts
62
long division with a trinomial
[2x^(3)-4xΒ²-15x+5] / [xΒ²-2x-8]
i get 2x with a remainder of x+5...is this right or did i do this wrong?
if it's right how do i write this properly
You're corr... | 4 | [
-0.056884765625,
0.09326171875,
0.107421875,
0.055908203125,
0.0247802734375,
0.052490234375,
-0.035888671875,
0.00433349609375,
-0.012451171875,
-0.00262451171875,
0.051025390625,
-0.07373046875,
0.0203857421875,
0.024169921875,
-0.046875,
0.039794921875,
0.0174560546875,
0.023193... | 2,729 | 2729 | |
alculation
Inclined Cylinder Volume Calculation
Liquid in cylindrical pipe or tank on an incline (tipped, slanted, sloped, leaning). Calculation requires cylinder angle of inclination, length, diameter, depth measurement (dipstick measurement),
and location of depth measurement. Computes volume of liquid in the cylind... | 4 | [
-0.040283203125,
0.0257568359375,
-0.051025390625,
-0.049560546875,
-0.0137939453125,
-0.064453125,
-0.08447265625,
0.1640625,
-0.0322265625,
-0.025390625,
-0.06201171875,
-0.02880859375,
0.040771484375,
0.047119140625,
-0.025634765625,
-0.01422119140625,
-0.056884765625,
0.0927734... | 2,730 | 2730 | |
integral x^2 Sinh(x)dx
June 4th 2008, 07:38 PM #1
Member
Joined
Jun 2008
Posts
175
integral x^2 Sinh(x)dx
Hi again. Trying to solve this by parts. Question is evaluate
$\int\limits_0^{\ln 2} {x^2 } Sinh(x)\_dx$
This is what I get and how I got there.
$= x^2 Cosh(x) - \int {2xSinh(x)} \_dx ... | 5 | [
0.056884765625,
0.01324462890625,
0.061767578125,
-0.06982421875,
0.0693359375,
-0.0167236328125,
-0.043212890625,
0.00970458984375,
-0.04052734375,
-0.006744384765625,
0.08251953125,
-0.0712890625,
-0.0228271484375,
0.00860595703125,
0.007598876953125,
0.011474609375,
0.010559082031... | 2,731 | 2731 | |
Isosceles triangle - maximum area
July 28th 2009, 09:24 AM #1
Newbie
Joined
Jul 2009
Posts
8
Isosceles triangle - maximum area
Can somebody please help me with this question?
An isosceles triangle has two equal sides of length 10 cm. Theta is the angle between two equal sides.
a) Express area of... | 5 | [
-0.037109375,
0.0025787353515625,
-0.0284423828125,
-0.09765625,
-0.03662109375,
-0.03564453125,
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0.06591796875,
-0.056884765625,
-0.0123291015625,
0.057373046875,
0.03466796875,
-0.007110595703125,
0.0966796875,
0.040771484375,
0.0771484375,
0.01312255859375,
0.046... | 2,732 | 2732 | |
MathGroup Archive: January 2012 [00659]
[Date Index] [Thread Index] [Author Index]
Re: Infinite Series Error - Bug?
β’ To: mathgroup at smc.vnet.net
β’ Subject: [mg124567] Re: Infinite Series Error - Bug?
β’ From: Devendra Kapadia <dkapa... | 5 | [
-0.11376953125,
0.052490234375,
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0.0194091796875,
-0.10498046875,
0.0277099609375,
-0.072265625,
-... | 2,733 | 2733 | |
help visualising a limit proof..
i tried to interpret it on a sketch http://img181.imageshack.us/img181/6498/13549423mx3.gif i cant see the animation of this proove
Last edited by mr fantastic; January 5th 2009 at 05:38 AM. Reason: Merge
If you take the definition of the limit: $\forall\mathcal{O}(L)\;\exists\mathcal... | 5 | [
-0.01519775390625,
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0.068359375,
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0.01953125,
0.000457763671875,
-0.039794921875,
-0.0419921... | 2,734 | 2734 | |
Integration Please help,
March 4th 2010, 10:14 AM #1
Senior Member
Joined
Sep 2009
Posts
300
Integration Please help,
Hello Please help me,
Can someone tell me if I have gone wrong in my attached drawing,I have to do integration by partial fractions,also any tips on methods to do partial fraction met... | 5 | [
-0.000881195068359375,
-0.01531982421875,
0.0888671875,
0.0322265625,
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0.00946044921875,
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0.009765625,
-0.0235595703125,
0.0556640625,
0.04907226562... | 2,735 | 2735 | |
Monthly Payments + Interest Problem
September 12th 2007, 06:45 PM #1
Newbie
Joined
Sep 2007
Posts
4
Monthly Payments + Interest Problem
Hello!
I have a problem that I'm trying to figure out how to do the steps of. I have the solution, but I can't figure out how to get to it. The problem is as follow... | 5 | [
0.035888671875,
-0.000408172607421875,
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0.035400390625,
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0.03369140625,
0.0133056640625,
0.0693359375,
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0.007141... | 2,736 | 2736 | |
Complex Structure
Represents a complex number.
Namespace: Β System.Numerics Assembly: Β System.Numerics
(in System.Numerics.dll)
public struct Complex : IEquatable<Complex>,
IFormattable
The Complex type exposes the following members.
Β Name Description
Compl... | 5 | [
-0.0859375,
0.0272216796875,
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0.039794921875,
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0.07421875,
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0.0269775390625,
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-0.0703125,
0.0029296875,
-0.012451171875,
-0.0485839... | 2,737 | 2737 | |
Lines Planes and vectors in R3 Problem
April 14th 2010, 06:50 PM #1
Newbie
Joined
Apr 2010
Posts
1
Lines Planes and vectors in R3 Problem
If the line is parallel to the vector v = < -2,1,3>, what is the equation of the plane containing L and the point B = (-2,3,1)
A) - x + y + z = 6
B) 3x - 2y -... | 4 | [
-0.0927734375,
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0.0012664794921875,
-0.0306396484375,
0.01458740234375,
-0.10546875,
... | 2,738 | 2738 | |
Higher Order Diff
The method described above is often sufficient to approximate first order differential equations, but it may not be obvious how to apply it to the approximation of differential equations of
higher order. The trick here is to break down the higher order differential equation into several first ... | 4 | [
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0.03515625,
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-0.0439453125,
0.01611328125,
-0.03369140625,
0.01611328125,
-0.05395... | 2,739 | 2739 | |
Antoine equation
From Knowino
The Antoine equation ^[1]^[2] is a mathematical expression (derived from the Clausius-Clapeyron relation) of the relation between the vapor pressure and the temperature of pure substances. The
equation was first proposed by Ch. Antoine, a French researcher, in 1888.^[3] The basic form of... | 5 | [
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-0.0830078125,
0.03173828125,
-0.0... | 2,740 | 2740 | |
Linearly independent vectors
May 8th 2011, 03:54 PM
Oiler
Linearly independent vectors
Hey all,
This problem was asked and I did not know how to solve it..
Prove that if $\lambda_1$ and $\lambda_2$ are real and distinct eigenvalues for some matrix A, with corresponding eigenvectors $V_1$ and $V_2$, then... | 4 | [
-0.031982421875,
-0.037353515625,
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0.050048828125,
0.036376953125,
-0.00262451171875,
-0.07373046875,
0.007781982421875,
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0.041748046875,
-0.00127410888671875,
-0.0240478515625,
0.042724609375,
0.025390625,
-0.00958251953125,
-0.0234... | 2,741 | 2741 | |
center of mass: functions with respect to y
February 9th 2013, 03:15 PM #1
Member
Joined
Aug 2011
Posts
76
Thanks
1
center of mass: functions with respect to y
Hi. In Calc 2 I have some homework questions for calculating the moments and center of mass for planar laminae. Fortunately, the book gives t... | 4 | [
-0.01708984375,
-0.0272216796875,
0.06201171875,
-0.0927734375,
-0.0107421875,
0.001953125,
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0.044921875,
-0.04638671875,
0.03125,
0.0118408203125,
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0.006988525390625,
-0.0291748046875,
0.0361328125,
0.09423828125,
0.0079345703125,
0.03063964843... | 2,742 | 2742 | |
or
Quadratic formula
Consider the quadratic equation ax^2 + bx + c = 0 (a β 0). Dividing throughout by a, we get
^2 + bx + c = 0 are ^2 β 4ac β₯ 0. If b^2 β4ac < 0, the equation will have no real roots.
Thus, if then the roots of the quadratic equation ax2 + bx + c = 0 are given by
This formula for finding the ro... | 4 | [
-0.09521484375,
0.058349609375,
-0.0203857421875,
-0.02587890625,
-0.034423828125,
0.04150390625,
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0.054443359375,
0.052490234375,
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0.05126953125,
-0.01544189453125,
-0.00537109375,
0.0186767578125,
-0.0006561279296875,
0.011474609375,
-0.00221252441406... | 2,743 | 2743 | |
The Telegraph - Calcutta : KnowHOW
We Will Graph You! (βquadratic versionβ) words by Lawrence Mark Lesser; (can be sung to the tune We Will Rock You)
You wanna draw a parabola
From the general form algebra.
Donβt despair, complete the square:
The x of the vertex comes out there, and
(We will, we will graph you!)2x... | 4 | [
0.0458984375,
-0.0002231597900390625,
-0.0157470703125,
-0.0181884765625,
-0.054931640625,
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0.010009765625,
-0.039794921875,
0.0301513671875,
0.06787109375,
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0.0947265625,
0.07763671875,
0.07470703125,
0.034912109375,
-0.002105712890... | 2,744 | 2744 | |
Solve the following ODE .. #6
Hello
Question:
Solve the following ODE :
$y^2dx + (x^2+3y+4y^2)dy = 0$
Solution:
It is not Linear or Bernoulli in x or y.
It is not Exact.
It is not Separable.
It can not be converted it to an exact equation by the integrating factor.
I tried ... | 4 | [
0.0007781982421875,
-0.09130859375,
0.01171875,
0.06640625,
0.01611328125,
-0.0244140625,
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0.00396728515625,
-0.057861328125,
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0.036865234375,
-0.0159912109375,
0.0255126953125,
-0.00592041015625,
-0... | 2,745 | 2745 | |
Multiplying Algebraic Terms
Multiplying and Dividing Algebraic Terms
Multiplying Algebraic Terms
When multiplying algebraic terms you (1) multiply numerical coefficients together, then
(2) list all the variables that occur in the terms bei... | 4 | [
0.01385498046875,
-0.0157470703125,
-0.08154296875,
0.0634765625,
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0.062255859375,
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0.07373046875,
-0.054931640625,
0.0595703125,
0.053466796875,
0.00518798828125,
0.03271484375,
-0.126953125,
0.1601... | 2,746 | 2746 | |
Help with Series Expansion
April 27th 2010, 08:01 PM #1
Member
Joined
Sep 2009
From
Minnesota
Posts
80
Thanks
8
Help with Series Expansion
Hi - I ask for a bit of help in trying to find the series expansion of
Integral(arctan(x^3)) - I was having quite a bit of trouble, and eventually I was f... | 5 | [
-0.0164794921875,
-0.044677734375,
0.03271484375,
0.07373046875,
-0.009033203125,
-0.06982421875,
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0.00311279296875,
-0.0081787109375,
-0.032958984375,
0.034912109375,
-0.0240478515625,
-0.0303955078125,
-0.025634765625,
-0.04345703125,
-0.0013580322265625,
-0.0061... | 2,747 | 2747 | |
Separable (VarPro) Nonlinear Least Squares, LSQCUR
"John D'Errico" <woodchips@rochester.rr.com> wrote in message
>
> Yes, you can get confidence intervals, but it will
> take some work on your part.
>
> I would suggest the best way is to do it is to create
> the Jacobian matrix for all of the parameters. This
> is easi... | 4 | [
-0.045654296875,
-0.08154296875,
0.05224609375,
-0.0145263671875,
-0.0296630859375,
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-0.04150390625,
-0.007537841796875,
0.00970458984375,
0.041748046875,
0.02478027343... | 2,748 | 2748 | |
Mat 221 Cowling s Rule by Jeddiebetty
For this discussion Iβm using Cowlingβs Rule to find out a 5 year old childβs dosage of adultβs dosage (75mg) Tamiflu. After reading Elementary and Intermediate Algebra I have learned Cowlingβs Rule
is a formula which converts adultβs dosage into childrenβs dosage, using the age of... | 4 | [
0.01104736328125,
0.0211181640625,
0.08203125,
-0.039794921875,
-0.0390625,
-0.0059814453125,
0.002899169921875,
0.08056640625,
-0.01055908203125,
0.111328125,
0.09228515625,
-0.03955078125,
0.061767578125,
0.0869140625,
-0.01544189453125,
-0.038330078125,
-0.0439453125,
0.06201171... | 2,749 | 2749 | |
Complex number question
May 25th 2010, 09:00 PM #1
Complex number question
Hi there, I'm having trouble with the following question. As usual, I'm probably missing something basic...
If $z=1+\sqrt{3}i$ is a solution to the equation $z^3-a=0,\ a\in\ c$ then the other two solutions are?
I know one of the... | 5 | [
-0.078125,
-0.0096435546875,
-0.0400390625,
0.0849609375,
-0.034423828125,
-0.027587890625,
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0.048583984375,
0.031982421875,
-0.046875,
-0.022705078125,
-0.03857421875,
0... | 2,750 | 2750 | |
If a Lie group is abelian, its Lie algebra has Lie bracket = zero
October 13th 2012, 10:58 AM #1
If a Lie group is abelian, its Lie algebra has Lie bracket = zero
Hello
I'm looking for tips (and just tips) on how to prove the proposition in the title: If a Lie group is abelian, its Lie algebra has Lie bracke... | 4 | [
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0.040283203125,
0.038330078125,
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-0.0654296875,
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-0.02392578125,
0.09375,
0.08447265625,
-0.0341796875,
0.09375,
-0.0004158020... | 2,751 | 2751 | |
rate of change help
August 7th 2008, 09:01 AM #1
Newbie
Joined
Jul 2008
Posts
11
rate of change help
A rectangular prism`s length is is increasing by 12 meters per min, its height increasing by 2 meters per min and its width increasing by 4 meters per minute. How fast is the volume changing when
the ... | 5 | [
0.01251220703125,
0.034423828125,
-0.00299072265625,
-0.06640625,
-0.0537109375,
0.00982666015625,
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0.03857421875,
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0.029541015625,
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-0.01373291015625,
0.0205078125,
0.03271484375,
-0.051025390625,
0.0791015625,
0.00897216796875,
0.05053... | 2,752 | 2752 | |
constraint maximization
December 30th 2010, 12:36 AM #1
Given $x+y=2$. Then what will be the maximum value of $x^3y^3(x^3+y^3)$?
Intuitively, I think it will be maximum when $x=y=1$. But can not put it mathematically. Any help?
Hello,
Do you know Lagrange's multiplier ?
One method is to use the... | 5 | [
0.0194091796875,
-0.076171875,
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-0.036865234375,
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0.00927734375,
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0.07470703125,
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0.0185546875,
0.05615234375,
0.07763671875,
-0.0186767578125,
-0.0322265... | 2,753 | 2753 | |
Lecture 8: Collaborative Filtering
Required Reading: Chakrabarti, sec 4.5
Efficient implementation of K-means clustering
As we wrote the algorithm before, on each iteration you have to compute the distance from every point to every centriod. If there are many points, and K is reasonably large, and the division into
... | 4 | [
-0.00029754638671875,
-0.00592041015625,
-0.031982421875,
-0.09619140625,
0.03662109375,
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0.0242919921875,
0.017578125,
0.03564453125,
-0.02880859375,
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-0.07958984375,
0.050537109375,
-0.05908203125,
-0.0419921875,
-0.0184326171875,
0.0341796875,
0.... | 2,754 | 2754 | |
e
How to solve simple interest problems.
This topic is part of the TCS FREE high school mathematics 'How-to Library'. It shows you how to solve simple interest problems.
(See the index page for a list of all available topics in the libra... | 4 | [
0.021484375,
0.03173828125,
0.020263671875,
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0.09765625,
-0.01116943359375,
0.0859375,
0.007568359375,
-0.043701171875,
0.00147247314453125,
0.031005859375,
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-0.09228515625,
-0.03588867... | 2,755 | 2755 | |
Determinant proof/evaluation ?
August 13th 2010, 05:26 AM #1
Determinant proof/evaluation ?
Hi guys,
I'm trying to answer the following:
Prove the following identity without evaluating the determinants:
[PHP]
a + b c+d e+f a c e b d f
p q r = p q r + p q r
u v w u v w u v w
[/PHP]
... | 5 | [
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0.0625,
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-0.... | 2,756 | 2756 | |
Need Help with proof
July 13th 2010, 01:40 PM
dbinnerley
Need Help with proof
I need to proove that if n=7(mod 8 ), then n does not equal x^2+y^2+z^2, for any x,y,z, integers. (the first equals sign is supposed the be a modulo symbol)
I've reduced the problem to finding that n=8s+7, for any s, but how do I ... | 4 | [
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0.06103515625,
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RE: st: Calculating cumulative value over several observations
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index... | 4 | [
-0.1259765625,
0.030029296875,
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0.0128173828125,
0.00075531005859375,
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... | 2,758 | 2758 | |
.T
K.Haroon
Site Admin
Joined: 11 Dec 2005
Posts: 1207
Posted: Tue Nov 01, 2011 6:52 pm Post subject: Questions on Climb and Descent
Maximum ANGLE OF CLIMB will be achieved when the excess THR... | 4 | [
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0.033203125,... | 2,759 | 2759 | |
Equation of the plane tangent to the surface
April 11th 2009, 10:48 AM #1
Junior Member
Joined
Mar 2009
Posts
32
Equation of the plane tangent to the surface
Hi,
I tried to this way:
$<br /> 5u^2 = 5$
$<br /> u = 1 <br />$
$<br /> 5v^2 = 45$
$<br /> v = sqrt(9) <br />$
when u ... | 5 | [
-0.035400390625,
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-0.072265625,
0.03... | 2,760 | 2760 | |
Spread of a disease
December 14th 2009, 08:34 PM #1
Newbie
Joined
Sep 2009
Posts
16
Spread of a disease
Under certain circumstances, the rate at which a disease spreads through a population of P individuals is proportional to the product of the number I of people infected and the number not
infected
... | 5 | [
-0.064453125,
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-... | 2,761 | 2761 | |
Homework Help
Posted by TracyAnn on Saturday, November 21, 2009 at 11:53pm.
Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 40mph and Train B at 50mph. Train A passes a station at 9:20 am. If train B passes the same station at
9:32 am, at what time will train B catch up t... | 4 | [
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... | 2,762 | 2762 | |
Inc/dec/maxima/concavity
May 12th 2010, 11:45 AM #1
Banned
Joined
Apr 2010
Posts
58
Inc/dec/maxima/concavity
f(x) = sinx + cosx, 0 <= x <= 2pi
a) Find the intervals on which f is increasing or decreasing.
b) Find the local maximum and minimum values of f
c) Find the intervals of concavity an... | 4 | [
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-0.063476562... | 2,763 | 2763 | |
Trig proofs help!
December 13th 2009, 10:04 PM
steelersgirl18
Trig proofs help!
Hi! I needed help verifying the following proofs! If anyone wants to contribute by solving either of them, I will greatly appreciate it!
Sin^(4) x - cos^(4) x = 1-2cos^(2) x
and:
sec x - sin x β’ tan x = cos x
and:... | 4 | [
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Need help proving mathematical induction
August 28th 2009, 03:04 PM
kalel918
Need help proving mathematical induction
Prove that 1(1!) + 2(2!) + ... + n(n!) = (n+1)! - 1, for n >= 1
Here's what I have:
Base case: n = 1.
s(n) = 1(1!) + 2(2!) + ... + n(n!) = (n+1)! - 1
Therefore, (1+1)! - 1 = 1
... | 4 | [
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Seperation of Variables Method
July 17th 2010, 01:59 PM #1
Newbie
Joined
Jul 2010
From
Qatar
Posts
15
Seperation of Variables Method
Hi All, new to the forum!
Having a few problems with this question: "Use the separation of variables method to solve the first ordinary differential equation dy/dx... | 5 | [
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DeMorgan's Laws and Distribution Rules
Date: 05/06/2003 at 11:27:06
From: Rosa
Subject: Logic
How can I show the reduction of the following problem without using
tables?
The > sign stands for "then."
(p>q)>(r>(p>q))
(p then q) then (r then (p then q))
p>(p>(p>p>p))
I have always seen problems using p>q ... | 4 | [
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factorize
March 5th 2007, 07:03 AM
bobchiba
factorize
Hi...ive been trying to wrap my head around these equations but just can't seem to get it yet.....heres a few examples:
Factorise completely the following expressions:
1) 4t^2 - 9s^2
2) 3s^3 - 15s^2 - 18s
3) 2x^2 - 13x - 24
If any of ... | 4 | [
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Homework Help
Posted by lala on Tuesday, April 13, 2010 at 4:01pm.
How do i find the second derivative of f(x)= tan(1-x)^1/2
β’ Calculus - Reiny, Tuesday, April 13, 2010 at 5:32pm
f'(x) = (1/2)(tan(1-x))^(-1/2)*sec^2 (1-x)(-1)
= -(1/2) [tan(1-x)]^(-1/2) [sec(1-x)]^2
now we need the product rule, what a... | 5 | [
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How do i solve ?
December 11th 2013, 12:03 AM
civil
How do i solve ?
I need to calculate the diameter of a cylinder . However the cylinder has a hemisphere as a lid and a flat bottom.
I am given the overall surface area which is 2M square
The overall height is 84cm. Thats it
I can formulate the cyli... | 4 | [
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... | 2,770 | 2770 | |
analytical geometry
Posted by Priya on Tuesday, January 24, 2012 at 11:33am.
the points M(6,-8) and E(8,6) are on a circle with radius 10 units. Determine the equation of the line equidistant from points M and E
β’ analytical geometry - Steve, Tuesday, January 24, 2012 at 1:10pm
what does the circle have to do ... | 4 | [
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... | 2,771 | 2771 | |
Show that u(x,t) satisfies this partial differential equation
February 21st 2011, 05:40 AM #1
Member
Joined
Feb 2011
Posts
75
Show that u(x,t) satisfies this partial differential equation
For $x$$\in$$R$ and $t > 0$ , define
$u(x, t) :=$$\int_0^{x/\sqrt{t}} \! e^{-s^2} \, \mathrm{d}s$
Show that ... | 4 | [
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0.0498046875,
-0.053... | 2,772 | 2772 | |
Designing gear cutters
Making gears requires making a cutter with the appropriate profile. The amateur machinist usually does this using the button method developed by Ivan Law and further improved by John Stevenson. They
have both given tables for the button diameter, button spacing and infeed required to produce the... | 4 | [
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-0.046875,
0.022583007812... | 2,773 | 2773 | |
tangent through the origin for lnx
April 6th 2008, 02:47 PM
theowne
tangent through the origin for lnx
Find the value of x where the tangent to y=lnx is a line through the origin.
Can someone give me an idea of the steps involved here? The derivative of lnx will tell the slope, I'm not sure where to go from... | 4 | [
-0.068359375,
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0.09130859375,
-0.138671875,
-0.062988281... | 2,774 | 2774 | |
Inferences about One Population Standard Deviation
Copyright Β© 2007β2014 by Stan Brown, Oak Road Systems
Summary: In class we learn to estimate population means and test hypotheses about them. It can also be important to estimate or test variability β standard deviation or variance of a population. This
page shows yo... | 5 | [
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0.0... | 2,775 | 2775 | |
Injective / surjective function
June 10th 2009, 07:20 AM #1
Member
Joined
Nov 2008
Posts
171
Injective / surjective function
a. let f:R^2-->R^2 be given by f(x,y)=(x,xy) . If the mapping injective? is it surjective?
b. Represent F(a) by a picture when A - {(x,y) β R^2 | x β [1,2], y β [0,2]}
Hi... | 4 | [
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0.004425048828125... | 2,776 | 2776 | |
Use Cauchy's integral theorem for derivatives to evaluate the contour integral.
August 30th 2010, 02:34 PM
dude113
Use Cauchy's integral theorem for derivatives to evaluate the contour integral.
a) Use Cauchy's integral theorem for derivatives to evaluate the contour integral
I = e^z/((z-2)^3) dz around the... | 5 | [
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-0.0303955078125,
-0.01055908... | 2,777 | 2777 | |
parametric equation and tangent line
March 11th 2008, 10:15 PM #1
parametric equation and tangent line
I need some help finding a parametric equation for the tangent line to the curve:
$x= e^t, \ \ y=te^t, \ \ z= te^{t^2}, \ \ (1,0,0)$
Solution:
$x' = e^t, \ \ y'= e^t +te^t, \ \ z'=e^{t^2} + 2t^{2}e... | 5 | [
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-0.11181640625,
-0.0... | 2,778 | 2778 | |
Math - Domain of Composite function
Number of results: 98,360
Math - Domain of Composite function
Find the domain of the composite function f β g . Please show all of your work. f(x) = βx; g(x) = 2x + 12
June 3, 2011 by CheezyReezy
Math - Domain of Composite
Find the domain of the composite function . Please show all... | 4 | [
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0.023681640625,
-0.0576171875,
-0.029541015625,
-0.034179... | 2,779 | 2779 | |
Pitch Diameter Study
This page summarizes a Spring 2011 project in which a partner and I were to investigate some type of recurring mechanical phenomena and draw conclusions from a statistical analysis. Of course this
goal can be satisfied by studying almost any mechanical system or object. Because of the prevalence of... | 4 | [
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0... | 2,780 | 2780 | |
algorithm or suggestion on a problem
Have the following problem (simplified)
In a X by Y 'town', I have to place some 'houses'. The 'houses' can be 1x1, 2x2 and 3x3. There is also a minimum number of 'houses' to be placed from each size (let's say 2 3x3, 12 2x2 and 11 1x1).
I have to find out the maximum number of 'ho... | 4 | [
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-0.045166015625,
0.03002... | 2,781 | 2781 | |
derivative.. problem
January 23rd 2010, 09:43 AM #1
Senior Member
Joined
Sep 2009
Posts
300
derivative.. problem
Hello,
I need help , can someone show me how to find the derivative of the problem in the attached photo
Please
$f(t)=\left(t+\frac{1}{t}\right)^{-2}$
$f'(t) = -2 \left(t+\fr... | 4 | [
-0.07177734375,
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0.02880859375,
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0.00131988525390625,
-0.03906... | 2,782 | 2782 | |
Delta and Gamma
Many people have a hard time grasping the concept of the option Greeks[1], especially delta[2] and gamma, and their relationship to each other, according to options trading articles[3].
It is not uncommon for words to have multiple meanings, and this is the case with the term delta in options trading... | 4 | [
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Three wheels rotating at different speeds.
January 23rd 2009, 12:10 PM
augmata
Three wheels rotating at different speeds.
Hello, everyone!
Suppose there were three wheels of equal size, rotating on the same axis, one point marked on the circumference of each wheel, and these three points lined up in one str... | 5 | [
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Help with Arzela-Ascoli theorem proof
February 28th 2010, 05:02 PM
Diego
Help with Arzela-Ascoli theorem proof
Our teacher gaves a few days ago the standard proof of this theorem which can be found in many text books, dealing with finding a dense numerable set of the set in which the functions are
defined, d... | 4 | [
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How to Implement Fibonacci Number Algorithm using C++ Example
Fibonacci was an Italian mathematician who introduced this subject to European mathematics, but the similar array was mentioned even before his time.
There are two definitions of Fibonacci numbers with slight variation. Both are pretty similar but little d... | 4 | [
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he
How to find the surface area of spheres. (Or find radius given surface area.)
This topic is part of the TCS FREE high school mathematics 'How-to Library', and will help you to find the surface area of spheres, or the radius if the surface area is given.
... | 4 | [
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functionally complete set of connectives
April 15th 2010, 06:29 AM #1
Newbie
Joined
Mar 2010
From
Uruguay
Posts
12
functionally complete set of connectives
I have to proof that the connective ${|}$ is functionally complete.
According to the definition :
A set of connectives C is complete if ... | 4 | [
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how to find the max,min,sup,inf of these cases..
December 20th 2008, 08:26 AM #1
MHF Contributor
Joined
Nov 2008
Posts
1,401
how to find the max,min,sup,inf of these cases..
i made a limit on both infinity and minus infinity for them
and i tried to find but its not working
http://img201.imagesh... | 5 | [
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Jordan Decomposition to Schur Decomposition
March 29th 2009, 01:52 PM #1
Junior Member
Joined
Mar 2009
Posts
46
Jordan Decomposition to Schur Decomposition
Let A be a complex or real square matrix. Suppose we have a Jordan decomposition A = $XJX^{-1}$, where X is non-singular and J is upper bidiagonal. S... | 4 | [
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0... | 2,790 | 2790 | |
finance question
December 3rd 2011, 05:07 AM #1
Member
Joined
Jul 2010
Posts
85
1. Paul plans to retire when he turns 55.
a. How much money will he need in his retirement investment so he can withdraw $40,000 per year for 30 years when he retires? Assume the interest rate in his reitrement years will ... | 5 | [
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Physics307L:People/Gooden/Formal Lab Report II
From OpenWetWare
MEASURING THE SPEED OF LIGHT BY A TIME DELAYED SIGNAL BETWEEN A LIGHT EMITTING DIODE AND PHOTOMULTIPLIER TUBE
Author: Matthew E. Gooden
Experimentalists: Matthew E. Gooden, Zane Gibson
Department of Physics and Astronomy
University of New Mexico
... | 4 | [
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Transformation-rotation
March 12th 2010, 02:57 AM #1
Please help me. I don't know how to do this without drawing and tracing. That is very slow. This is middle school math. Please don't use sin and cos. Please expain this for me.
Draw triangle LMN with vertices L(2, -1), M(6, -2) and N (4, 2). Find the coodin... | 4 | [
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Stubborn MuleEliminating the irrelevantEliminating the irrelevant
Eliminating the irrelevant
After going to all the trouble of explaining the βclassicalβ analysis of the Tuesdayβs Child problem, here I will explain why I think that analysis ends up with the wrong answer.
This will get into the nuts and bolts of the m... | 5 | [
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SOLVED: Trying to "reverse engineer" a calculation: any number hackers out there?
Here is the solution for calculating the last sector used in the partition table, usefull for when the number of Heads on the disk is not 255. This is handy if you are ever need to write to the
partition table manually (such as in a perl ... | 4 | [
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RE: st: RE: mim: reg command
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
RE: st: RE: mim: reg command
From "Maarten Buis" <M.Buis@fsw.vu.nl>
To <statalist@hsphsun2.harvard.edu>
Subject RE: st: RE: mim: reg command
Date Fri, 27 Apr 2007 12:55:12 +0200
--- Richard Williams wro... | 5 | [
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Examples of solving linear ordinary differential equations using an integrating factor
Example 1
Solve the ODE \begin{gather} \diff{x}{t} -\cos(t)x(t)=\cos(t) \label{example1} \end{gather} for the initial conditions $x(0)=0$.
Solution: Since this is a first order linear ODE, we can solve it by finding an integrating ... | 5 | [
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... | 2,797 | 2797 | |
Maximum area of rectangle with given perimeter.
May 10th 2010, 03:31 AM #1
Junior Member
Joined
Feb 2009
Posts
59
Maximum area of rectangle with given perimeter.
Find the maximum area of a rectangular piece of ground that can be enclosed by 100 m of fencing
any help would be great!
Area = $-X^2... | 4 | [
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Basic point-set topology question (closure of rings of sets under union)
March 28th 2010, 02:09 AM #1
Newbie
Joined
Mar 2010
Posts
20
Basic point-set topology question (closure of rings of sets under union)
Edit: I think I figured it out (immediately after going to bed, of course). Take the symmetric dif... | 4 | [
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