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|---|---|---|---|---|---|
Posts from September 2011 on A Mind for Madness
by hilbertthm90 1 Comment
Mirror Symmetry
Well, I keep putting off writing a new post because I’m not sure what I’m going to do it on. I had an idea. I work with Calabi-Yau varieties a lot, and so inevitably the term “mirror symmetry”
appears all over the place. I’m m... | 4 | [
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0.0126953125,
0.033935546875,
0.043701171875,
-0.0166015625,
... | 2,800 | 2800 | |
numpy.random.laplace
Draw samples from the Laplace or double exponential distribution with specified location (or mean) and scale (decay).
The Laplace distribution is similar to the Gaussian/normal distribution, but is sharper at the peak and has fatter tails. It represents the difference between two independe... | 4 | [
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0.04296875,
0.01361083984375,
0.006103515625,
0.059326171875,
0.0291748046875,
0.076171875,
0.0203857421875,
0.048828125,
-0.138671875,
0.021728515625,
-0.076171875,
0.01... | 2,801 | 2801 | |
proportions
Printer-friendly version MS Word (.doc)
Fisher’s Exact Test
· Does not rely on Normality assumption.
· Uses “exact” distribution instead of a... | 5 | [
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0.00537109375,
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0.0673828125,
... | 2,802 | 2802 | |
Re: st: clogit marginal effects?
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: clogit marginal effects?
From "Arne Risa Hole" <arnehole@gmail.com>
To statalist@hsphsun2.harvard.edu
Subject Re: st: clogit marginal effects?
Date Tue, 29 Aug 2006 15:52:28 +0100
Hi James
... | 5 | [
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Geometric Proof Lesson Plans & Worksheets | Lesson Planet
Geometric Proof Teacher Resources
Find Geometric Proof educational ideas and activities
Showing 1 - 20 of 77 resources
Learners examine their prior knowledge of algebra to explore geometric proof. In this proving supplementary and complementary lesson, studen... | 4 | [
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1.3.3 Ohms Law and Classical Physics
This Module comes from "Introduction to Materials Science II"; where you will find the most recent version. The link takes you there.
In this subchapter we will look at the classical treatment of the movement of electrons inside a material in an electrical field.
In the precedi... | 4 | [
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Find Unit vector parallel to xy plane and perp. to a vector
October 5th 2009, 01:26 PM
JimmyRP
Find Unit vector parallel to xy plane and perp. to a vector
Find all unit vectors parallel to the xy-plane and perpendicular to the vector [1, -2, 2].
so
$<br /> a=[1,-2,2]$
$v=[x,y,0]$
Using Dot Produ... | 4 | [
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... | 2,806 | 2806 | |
quadrativ question: easy to answer
December 28th 2008, 10:16 AM #1
Junior Member
Joined
Oct 2008
Posts
57
Thanks
1
quadrativ question: easy to answer
I'm getting a little confused with the quadrativ formula, i used to know it, but its been a while!
i'm getting -b+/- square root (b-4ac) / 2* c
... | 4 | [
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0.04223... | 2,807 | 2807 | |
velocity of spring
May 14th 2008, 03:29 PM #1
Newbie
Joined
May 2008
Posts
11
velocity of spring
A mass attached to a vertical spring has position function given by s(t)=5sin(3t) where t is measured in seconds and s in inches.
Find velocity at time t=4.
Find the acceleration at time t=4.
vel... | 4 | [
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Mplus Discussion >> Nonlinear regression in weighted samples
Message/Author
Stian Lydersen posted on Friday, June 27, 2014 - 4:38 am
We have a weighted sample, weighted as follows: The sampling was carried out in four strata, with sampling probabilities .37, .48, .70 and 0.89, respectively. We want to carry out a nonli... | 5 | [
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Infinite Series
March 29th 2010, 06:49 PM #1
Newbie
Joined
Mar 2010
Posts
2
Infinite Series
I originally thought this Infinite Series would be fairly easy, however I can't figure out how to evaluate it.
infinity
∑ (2^(j+4)) / (7^(j-3))
j=6
is there a certain formula i need to follow?
... | 4 | [
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please help with this question
April 8th 2013, 08:12 PM #1
Junior Member
Joined
Mar 2013
From
Florida, USA
Posts
39
Thanks
1
please help with this question
A population of a Jellybean is growing exponentially. At the given timet, in years, the population J(t) is given by J(t) = J(0)ekt, where k i... | 4 | [
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Product of two non-square matrices is identity
October 8th 2009, 03:17 PM #1
Product of two non-square matrices is identity
Question: Suppose $A$ is $m \times n$ with rank $m$. Prove there exists $n \times m$ matrix $B$ such that $AB = I_m$.
I am kind of stuck on this. Any hints on which properties or theore... | 5 | [
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0.125,
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0... | 2,812 | 2812 | |
Initial value problems
April 29th 2007, 11:56 AM #1
Newbie
Joined
Sep 2006
Posts
23
Initial value problems
I have been working on this hw set all weekend and it just isn't clicking!! Any help would be greatly appreciated.
Solve the given initial value problems by Laplace transforms. Show the details... | 5 | [
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A question about Euler's phi function
This one is for fun. I just made it up. Show that $\inf_{n \in \mathbb{N}}\frac{\phi(n)}{n}=0$.
We can start from the explicit expression of $\varphi (n)$ ... $\varphi(n)= n\cdot \prod_{p|n} (1-\frac{1}{p})$ (1) ... from which we derive immediately... $\frac{\varphi(n)}{n} = \prod... | 5 | [
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... | 2,814 | 2814 | |
Geometry, perimeter, area of a triangle
May 29th 2007, 08:39 PM #1
Junior Member
Joined
Aug 2006
Posts
28
Geometry, perimeter, area of a triangle
* *
***** 20
****** *
* ****** *
* **********
* ********** *
* ************* *
*******************
16
please show me how ... | 4 | [
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Calculating the height of a cone given just the volume and the angle of the apex
I think the header summarises what I would like to do. Regards
What is the apex angle measured against? Is it a vertical line which falls from the apex perpendicular to the base? (ie: bisecting the cone in the Z axis) The volume of a cone... | 4 | [
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Expressions and Equations
Reversing Operations
The goal in solving an equation is to get the variable by itself on one side of the equation and a number on the other side of the equation.
To isolate the variable, we must reverse the operations acting on the variable. We do this by performing the inverse of each opera... | 4 | [
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0.099609375,
... | 2,817 | 2817 | |
Gaussian Curvature of a Sphere
December 27th 2012, 05:19 AM #1
Newbie
Joined
Dec 2012
From
UK
Posts
11
Gaussian Curvature of a Sphere
Hi all,
I am trying to find the Gaussian Curvature of the sphere with equation:
X(theta, phi) = (Rcos(theta)sin(phi) , Rsin(theta)sin(phi) , Rcos(theta)
... | 5 | [
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Ordinary differential equation
From Wikiversity
In mathematics, an ordinary differential equation (or ODE) is a relation that contains functions of only one independent variable, and one or more of its derivatives with respect to that variable.
A simple example is Newton's second law of motion, which leads to the dif... | 4 | [
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Area of a Parallelogram with Vertices..
January 11th 2009, 10:00 PM
sfgiants13
Area of a Parallelogram with Vertices..
[1,2,3]
[1,3,6]
[3,8,6]
[3,7,3]
I know I have to find 2 (I think) vectors that determine the area and then I take the cross product of the 2. That's about all I know I don't kno... | 4 | [
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Re: st: Question on mfx and regress
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: Question on mfx and regress
From May Boggess <mboggess@stata.com>
To statalist@hsphsun2.harvard.edu
Subject Re: st: Question on mfx and regress
Date 06 Apr 2004 12:16:37 -0500
On Tuesday... | 5 | [
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DIR-diver.com - Nitrox Class Part 1
Nitrox Class - Part 1
Part two.
This is part one of two covering what you need to know about nitrox. Nitrox is the standard gas used by DIR divers from 0-30 meters / 0-100 ft.
A common joke is that air is only used to fill tires. Which by the way is not entirely true as many vehic... | 4 | [
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Posts from July 2009 on The Gauge Connection
Who fears a non-perturbative Higgs field?
28/07/2009
One of my preferred readings in the blogosphere is Tommaso Dorigo’s blog. I think this is a widely known blog for people interested about physics and got some citation also at New York Times. Quite
recently he published ... | 4 | [
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-... | 2,823 | 2823 | |
Nerdy Marriage Proposal Math: What Percent of People Are Right For You?
This Valentine’s Day, Drake Martinet proposed to Stacy Green, Mashable’s Vice President of Marketing and Communications, via an infographic on Mashable.
Here’s the part of it that reminded me of a GRE problem:
How did we get from 1,340,000 women... | 4 | [
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Question from Cambridge STEP Paper.
April 25th 2008, 10:44 AM #1
Junior Member
Joined
Mar 2008
Posts
31
Question from Cambridge STEP Paper.
Hi everyone, I was looking through STEP Papers because I'm considering doing Mathematics at University. On the University of Cambridge website, they have past STEP p... | 5 | [
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Rational Functions Application Question
December 29th 2009, 04:57 PM
MordernWar2
Rational Functions Application Question
Hey Guyzz,
Can you help me with this Application Problem; its all about ration functions.
Patricia and Chelsea can build a bike together in an hour and a half. However, if Patricia wo... | 4 | [
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[aprssig] FindU Telemetry page - Help needed
Mark Cheavens mcheavens at usa.net Fri Oct 10 20:52:05 UTC 2008
Steve,
Thank you very much for the refresher course in Algebra!
For those interested,
Here is the solution: (In the form of the needed link!)
http://www1.findu.com/cgi-bin/tele1.cgi?call=PURG&last=96¶m=1&... | 4 | [
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injectivity and surjectivity (onto and one-one)
February 22nd 2009, 04:23 PM #1
injectivity and surjectivity (onto and one-one)
I was going over my assignment to study for the upcoming midterm, and I thought I had a grasp on surjectivity and injectivity...I don't. Can someone tell me where I went wrong in proving... | 4 | [
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-0.... | 2,828 | 2828 | |
Double Angle Formula Lesson Plans & Worksheets | Lesson Planet
Double Angle Formula Teacher Resources
Find Double Angle Formula educational ideas and activities
Showing 1 - 15 of 15 resources
Students use the double angle formula to solve one problem. They are given the problem: if sin(a)=3/5, and a is an acute angl... | 4 | [
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0.0054931640625,
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0.05322265625... | 2,829 | 2829 | |
More math help
2004-Oct-27, 09:44 PM #1
Established Member
Join Date
Feb 2004
Posts
122
More math help
This is another problem that I need help on.
1. Prove that there exists an infinitely differentiable function.
I was thinking I should first find a function that is infinitely differentiable t... | 5 | [
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0.01214599609375,
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-0.056884765625,
-0.04... | 2,830 | 2830 | |
MathGroup Archive: December 2006 [00020]
[Date Index] [Thread Index] [Author Index]
RE: RE: Functional decomposition (solving f[f[x]] = g[x] for given g)
• To: mathgroup at smc.vnet.net
• Subject: [mg71872] RE: [mg71839] RE: [mg71764] F... | 5 | [
-0.11181640625,
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-0.01324462890625,
0.064453... | 2,831 | 2831 | |
Quadratic Equation Word Question
January 23rd 2010, 03:24 PM #1
Newbie
Joined
Oct 2008
Posts
7
Quadratic Equation Word Question
Hello could someone please help me with this?
A picture measuring 5cm by 10cm is surrounded by a frame with half the area of the picture. The width of the frame is to be the... | 4 | [
0.0189208984375,
0.0255126953125,
0.0284423828125,
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0.025146484375,
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0.11376953125,
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0.0859375,
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0.03564453125,
... | 2,832 | 2832 | |
Gray
It is commonly asserted that the basic physics of planetary temperature is well understood. However, it is surprisingly difficult to find any exposition of that basic physics. This lack contributes
to the most egregious impossibilities being touted as ultimate horrors we might face if we don't mend our ways. On th... | 4 | [
0.0211181640625,
0.046142578125,
0.030029296875,
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0.04931640625,
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0.0080566... | 2,833 | 2833 | |
Nonparaxial propagation of an elegant Laguerre-Gaussian beam orthogonal to the optical axis of a uniaxial crystal
« journal navigation
Nonparaxial propagation of an elegant Laguerre-Gaussian beam orthogonal to the optical axis of a uniaxial crystal
Optics Express, Vol. 20, Issue 15, pp. 17160-17173 (2012)
http://dx.... | 4 | [
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Ordinary generating function
July 24th 2010, 03:08 PM #1
Ordinary generating function
$c_{0}=1$ and $c_{n}=3c_{n-1}+3^{n}$ for $n\geq1$
$c_{n}x^{n}=3c_{n-1}x^{n}+3^{n}x^{n}$
$\sum_{n\geq1}c_{n}x^{n}=$$\sum_{n\geq1}3c_{n-1}x^{n}+\sum_{n\geq1}3^{n}x^{n}$
LHS $\sum_{n\geq1}c_{n}x^{n}=$$\left(\sum_{n\g... | 5 | [
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-0... | 2,835 | 2835 | |
Absolute Value in Algebra
Absolute Value means ...
... how far a number is from zero:
"6" is 6 away from zero,
and "−6" is also 6 away from... | 4 | [
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0.0390625,
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... | 2,836 | 2836 | |
Trouble with a proof...help?
April 28th 2009, 09:52 AM #1
Newbie
Joined
Apr 2009
Posts
4
Trouble with a proof...help?
I must prove that the sum of xiyi is equal to the sum of yiXi
I am given that xi=(Xi-X average) and yi=(Yi-Y average)
This is a question having to do with the Classic Linear Reg... | 4 | [
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Transformation help
August 2nd 2010, 05:47 AM #1
Senior Member
Joined
Apr 2010
Posts
487
Transformation help
The question:
Show that the order in which transformations is important by first sketching the result when the triangle A(1,0) B(1,1) C(0,1) is rotated by 45 degrees about the origin and then ... | 4 | [
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Finding a maximum independent set in time
Finding a maximum independent set in time O(2^n/4)
J. M. Robson
... | 4 | [
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(Year 10) Factoring 6th Degree Polynomial
October 1st 2008, 04:52 AM
essaymasters
(Year 10) Factoring 6th Degree Polynomial
Hey everyone! I'm new here and I'd be grateful of your help.
I would like to know how to factor and find the roots/zeroes of:
$14x^6-9x^2+2$
I heard of a method where you can ... | 5 | [
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getting wrong answer for determinant
February 26th 2010, 02:22 PM #1
Senior Member
Joined
Jun 2009
Posts
251
Still need help! getting very confused: getting wrong answer for determinant
I am trying to calculate the area of a triangle given the points (3,3) (-1,-1) (4,1).
I am having trouble calculat... | 5 | [
-0.00994873046875,
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0.0024261474... | 2,841 | 2841 | |
Math Help
Challenge Question: $\int^{\infty}_{0} \frac{\cos x - \cos 3x}{x^{2}} \ dx$ Moderator editor: Approved Challenge question.
Alternatively. Let $J(\theta)=\int_0^{\infty}\frac{\cos(x)-\cos(\theta x)}{x^2}dx$. Then, $J'(\theta)=\int_0^{\infty}\frac{\partial}{\partial \theta}\frac{\cos(x)-\cos(\theta x)}{x^2}dx... | 5 | [
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0.050537109375,... | 2,842 | 2842 | |
First and Second Order Differential Equations
First Order Differential equations
A first order differential equation is of the form:
Linear Equations:
The general general solution is given by
where
is called the integrating factor.
Separable Equations:
(1) Solve the equation g(y) = 0 whic... | 4 | [
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0.01556396484... | 2,843 | 2843 | |
Trig expressions
November 26th 2012, 07:18 AM #1
Newbie
Joined
Oct 2012
From
Quebec
Posts
10
Trig expressions
(1 pt) Find the exact value (NO DECIMALS) of each expression by sketching a triangle:
A) sin(cos^-1(3/5))
b) cos(sin^-1(4/5))
I have no idea where to start
Re: Trig expressions
... | 4 | [
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0.0155... | 2,844 | 2844 | |
Find the number of words found by permuting all the letters
Question Stats:
50%50% (01:39)based on 30 sessions
jlo0909 wrote:
I'm having issues solving problems like the following two (any help would be greatly appreciated):
1. Find the number of words found by permuting all the letters in the word INDEPENDENCE suc... | 5 | [
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-0.0490722... | 2,845 | 2845 | |
word problem - algebra
Moderator
Registered: 2005-06-22
Posts: 4,900
Re: word problem - algebra
Beth
Guest
word problem - algebra
How do you solve the following type of word problem:
If Jane can paint a house in 2 days, Paul can paint the same house in 5 days and Mike can paint the same house in 3 ... | 4 | [
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0.03125,
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... | 2,846 | 2846 | |
Toolbox Questions and Posts
Hi MaplePrime-ers!
I've been using the Maple(17) toolbox in Matlab(2012b) to quickly enumerate systems of equations by: (i) solving them symbolically, (ii) using unapply to make them functions, (iii) then supplying the
points (driver equations) to get the system solution. Speed is a must, b... | 4 | [
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0.0595703125,
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0.053955078125,
-0.07421875,
0.003936767578125,
0.064453125,
-0.02685546875,
... | 2,847 | 2847 | |
Laboratory Exercise 2: Descriptive Statistics
Labortory Exercise 2: Descriptive Statistics
--------------------------------------------
Density Curve, Normal Quantile Plot
An accurate measure of the reaction time is of great importance for
the interpretation of experiments involving reactions of
subjects. Below 64 r... | 4 | [
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Items tagged with constant
Hello guys ...
I used a numerically method to solve couple differential equation that it has some boundary conditions. My problem is that some range of answers has 50% error . Do you know things for improving our
answers in maple ?
my problem is :
a*Φ''''(x)+b*Φ''(x)+c*Φ(x)+d*Ψ''(x)+e*Ψ(x)... | 4 | [
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-0.01025390625,
-0.003... | 2,849 | 2849 | |
(Physics) Mechanics
June 15th 2005, 05:06 AM #1
Newbie
Joined
Jun 2005
Posts
11
Mechanics
I'm sitting a Mechanics paper as one of my Maths modules tomorrow and I'm stuck on a practice question, please can someone help if they can.
A car is towing a trailer along a horizontal straight road using a ho... | 4 | [
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0.043212890625,
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0.021484375,
-0... | 2,850 | 2850 | |
Correlation
In statistics, correlation (often measured as a correlation coefficient, ρ) indicates the strength and direction of a linear relationship between two random variables. That is in contrast with the
usage of the term in colloquial speech, which denotes any relationship, not necessarily linear. In general stat... | 4 | [
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0.060791015625,
-0.... | 2,851 | 2851 | |
MathGroup Archive: April 2006 [00707]
[Date Index] [Thread Index] [Author Index]
Re: 3D plot with range restricted to non-rectangular region
• To: mathgroup at smc.vnet.net
• Subject: [mg66144] Re: [mg66097] 3D plot with range restricte... | 4 | [
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0.0107421875,
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... | 2,852 | 2852 | |
Solar Hot Water Math, Formulas and Conversions
BTU (British Thermal Unit) Calculations
1 BTU=1 DEGREE FARENHEIT INCREASE IN ONE POUND OF WATER.
8.34 POUNDS IN ONE GALLON
BTU EXAMPLE:
Incoming water 50F outgoing water 120F 120 - 50 = DELTA T 70F
BTU's for 1 gallon of water is 70 (delta T) * 8.34 (pounds per gallon) =... | 4 | [
0.0242919921875,
0.0296630859375,
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0.080078125,
0.0255126953125,
0.06689453125,
0.029296875,
-0.0042419433593... | 2,853 | 2853 | |
Math Help
January 8th 2009, 04:11 AM #1
Junior Member
Joined
Dec 2008
From
America, Ohio
Posts
32
Functions
hi,
Q1.
f(x)=(x-2)(x+1)^2
a) find the min and max values of f(x):
b) A point of inflection is a point where the graph changes direction of concavity, i.e. a point where f''... | 5 | [
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0.016357421875,
0.01611328125,
0.0859375,
-0.0076904296875,
-0.06689... | 2,854 | 2854 | |
Isomorphism Question
Let n be an even integer. Prove that Dn/Z(Dn) is isomorphic to D(n/2).
Last edited by wutang; May 19th 2010 at 06:23 PM.
Hints: if $D_{2n}=\left\{a,b\;;\;a^2=b^n=1\,,\,aba=b^{-1}=b^{n-1}\right\}$ , then: 1) $Z\left(D_{2n}\right)=\{1,b^{n/2}\}$ 2) $D_{2n}/Z\left(D_{2n}\right)=\left\{\overline{a}\,... | 4 | [
-0.16015625,
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0.0634765625,
-0.00775146484375,
-0.007446289... | 2,855 | 2855 | |
Trigonometic Identities
November 16th 2006, 06:47 PM #1
Newbie
Joined
Oct 2006
Posts
6
Trigonometic Identities
Hi there .. I'm not sure how to approach this question and I would greatly appreciate it if someone could help me
Thanks a bunch .
Here's the question :
Prove the identity .
... | 4 | [
-0.0107421875,
0.09375,
0.0311279296875,
0.06396484375,
0.01239013671875,
0.039794921875,
0.004974365234375,
-0.0301513671875,
0.00933837890625,
-0.052001953125,
0.03564453125,
-0.01458740234375,
-0.006683349609375,
0.06396484375,
-0.0029754638671875,
0.00013256072998046875,
0.033203... | 2,856 | 2856 | |
simplification
How can i count this easier??? 2500*(1,0525)^5+2500*(1,0525)^4+2500*(1.0525)^3+25 00*(1.0525)^2+2500*(1,0525)^1= 14612.10382 How could i count this without writing allt this down?
Funny because I'm getting 322914659677371145062500 doing it both ways. Not what you got. How did you get such a small answer... | 5 | [
0.0089111328125,
0.052001953125,
-0.03076171875,
-0.056640625,
-0.0185546875,
-0.0595703125,
0.095703125,
0.0260009765625,
0.07568359375,
0.048095703125,
-0.0159912109375,
-0.0859375,
0.064453125,
-0.036376953125,
-0.027099609375,
-0.01397705078125,
-0.07421875,
0.04541015625,
0.... | 2,857 | 2857 | |
Summation Notation Problem
How could this be simplified in summation notation: 5 * y1 + 25 * y2 + 125 * y3 Thanks!
Welcome to the forum $5 \times y^1 + 25 \times y^2 + 125 \times y^3$ $(5\times y)^1 +(5\times y)^2 + (5\times y)^ 3$ $<br /> \sum_{r= 1}^{3}{(5\times y)^r} <br /> <br />$
Thanks, ADARSH. What about this,... | 4 | [
0.00885009765625,
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0.05322265625,
-0.0390625,
-0.0089111328125,
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0.060302734375,
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0.03662109375,
0.023681640625,
-0.055419921875,
0.1015625,
-0.02978515625,
0.06103515... | 2,858 | 2858 | |
Help with a proof (Convergence)
November 29th 2013, 11:07 AM #1
Member
Joined
Jun 2013
From
Israel
Posts
154
Help with a proof (Convergence)
I uploaded a picture, a proof of a statement. There are things that I didn't understand. I translated the question from Hebrew to English so I hope it's clear e... | 5 | [
-0.034912109375,
0.037109375,
0.1015625,
0.05859375,
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0.0084228515625,
-0.0277099609375,
-0.0703125,
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0.09375,
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-0.04833984375,
0.036865234375,
0.0615234375,
0.00445556640625,
0.09765625,... | 2,859 | 2859 | |
Summary: Game Theory
Two-Person Zero Sum Game
In a two-person zero sum game, each of the two players is given a choice between several prescribed moves at each turn, and each player's loss is equal to the other player's gain.
The payoff matrix of a two-person zero sum game has rows labeled by the "row player's" moves... | 5 | [
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0.0654296875,
-0.040283203125,
... | 2,860 | 2860 | |
Percentages
July 4th 2012, 05:35 AM #1
Newbie
Joined
Jul 2012
From
UK
Posts
4
Percentages
Hello all
I have another percentages question that I think that you could help me with as it looks fairly basic but I am having trouble understanding the logic behind it.
Q. What percentage of total el... | 4 | [
0.109375,
-0.0390625,
0.01068115234375,
0.034423828125,
0.015380859375,
0.06201171875,
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0.039794921875,
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0.017822265625,
0.06201171875,
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-0.051513671875,
0.0179443359375,
0.053466796875,
0.01031494140625,
-0.0290527... | 2,861 | 2861 | |
Capacitance and Capacitors
Capacitance and Capacitors with Example
Capacitance and Capacitors
Capacitance is the ratio of charged gained per potential gained of the conductors. Unit of capacitance is Coulomb per Volt and it is called as Farad (F).
Capacitance is a scalar quantity. Graph given below shows the relati... | 4 | [
0.0037994384765625,
-0.016845703125,
-0.0859375,
-0.032958984375,
0.103515625,
0.043701171875,
0.10107421875,
0.10791015625,
0.078125,
0.057861328125,
0.07470703125,
-0.109375,
0.0712890625,
0.1220703125,
-0.0203857421875,
-0.154296875,
-0.002593994140625,
-0.006195068359375,
-0.... | 2,862 | 2862 | |
Trace and Norm Generalized
Let $K, L$ be number fields satisfying $K \subset L$. Let $\sigma_1,...,\sigma_n$ be the $n = [L:K]$ embeddings of $L$ in $\mathbb{C}$ that fix $K$. Let $\alpha \in L$. Then define the relative trace
and relative norm as follows
\[ \array { T^L_K(\alpha)=\sigma_1(\alpha)+...+\sigma_n(\alpha... | 5 | [
0.03564453125,
-0.0380859375,
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-0.02197265625,
-0.087890625,
0.045654296875,
-0.039794921875,
0.065... | 2,863 | 2863 | |
Unit VectorsAlgebraLAB: Lessons
Introduction:
In this lesson, unit vectors and their basic components will be defined and quantified. We will examine both 2- and 3-dimensional vectors.
The Lesson:
A unit vector is a vector which has a magnitude of 1.
For example, the vector v = (1, 3) is not a unit vect... | 4 | [
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-0.05517578125,
-0.07666015625,
0.04370117... | 2,864 | 2864 | |
How to do binomial coefficient
April 15th 2009, 08:06 PM #1
Newbie
Joined
Mar 2009
Posts
9
How to do binomial coefficient
Okay,
One more question. This section of the book is pretty spotty.
Find a closed for for the generating function for the sequence a(n) = $\binom{n}{2}$ , for n=0, 1, 2.
... | 5 | [
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-0.057861328125,
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0.107421875,
0.005645751953125,
-0.0571289... | 2,865 | 2865 | |
A Very Gentle Introduction to Information Theory: Guessing the Entropy
;; A Very Gentle Introduction to Information Theory : Part IV
;; Entropy and Huffman Coding
;; Once again, I'll keep some code from the earlier parts, without explanation
;; Probability distributions
(defn combine-keywords [& a] (keyword (apply ... | 4 | [
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0.016845703125,
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-0.08349609375,
0.1533... | 2,866 | 2866 | |
Homework Help
Posted by ryan on Saturday, November 23, 2013 at 3:22pm.
Find the point on the line -6 x + 5 y - 1 =0 which is closest to the point ( -4, 1 )
• Calculus - Reiny, Saturday, November 23, 2013 at 3:53pm
Let the point be P(x,y) , point (-4,1) be A
Since the shortest distance must be where AP is p... | 5 | [
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0.04150390625,
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0.12158203125,
-0.09765625,
-0.02526855... | 2,867 | 2867 | |
basic feasible solutions
February 5th 2009, 01:39 PM #1
Junior Member
Joined
Sep 2008
Posts
33
Thanks
1
basic feasible solutions
Let P = {2x1 + x2 + x3 = 2,
x1 + x2 = 1
x1,x2 >= 0}
List all of the basic feasible solutions. Which of them are degenerate?
Not sure how to go about this ... | 5 | [
-0.049560546875,
-0.057373046875,
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0.0859375,
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-0.0098876953125,
0.04296875,
-0.12255859375... | 2,868 | 2868 | |
Finding the limit
June 27th 2013, 09:45 PM #1
Newbie
Joined
Jun 2013
From
Canada
Posts
2
Finding the limit
Hi, I need to find the limit of this trigonometric function.
I used the trig identity for the cosine, the one for cos(a+b), and i get -sinh.
Now I'm stuck. I think I shou... | 5 | [
-0.0849609375,
0.052490234375,
-0.061767578125,
-0.034912109375,
0.05908203125,
0.00982666015625,
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-0.0111083984375,
0.035400390625,
-0.04150390625,
0.08642578125,
-0.032958984375,
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0.05615234375,
0.03369140625,
0.0128173828125,
-0.0235595703125,
-... | 2,869 | 2869 | |
Algebra Math B level
June 10th 2009, 09:53 AM #1
Junior Member
Joined
May 2008
Posts
25
Algebra Math B level
Hi, i would like to recieve some help with this math problem. I have been working on it for a while but seem to be getting nowhere due to the powered negative one after the powered 3n in the
f... | 4 | [
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0.0240478515625,
0.056396484375,
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0.099609375,
-0.047607421875,
... | 2,870 | 2870 | |
Factoring Polynomials
Factoring a polynomial is the opposite process of multiplying polynomials. Recall that when we factor a number, we are looking for prime factors that multiply together to give the number; for example
6 = 2 ´ 3 , or 12 = 2 ´ 2 ´ 3.
When we factor a polynomial, we are looking for simpler polynomia... | 4 | [
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0.0625,
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0.05078125,
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0.039794921875,
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0.0177001953125,
0.0272216796875,
-0.08154296875,
0.107421875,
-0.1... | 2,871 | 2871 | |
Telescope astigmatism
telescopeѲptics.net ▪ ▪ ▪ ▪ ▪▪▪▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ CONTENTS
4.3. Telescope astigmatism
Similarly to coma, astigmatism is an off-axis point w... | 4 | [
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-0.06787109375,
-0.040771484375,
0.033203125,
-... | 2,872 | 2872 | |
Calculate the generalized integral
Calculate the generalized integral Attachment 14469 Attachment 14470 Am I correct? and then?
Sorry to say but you're not even close to correct, and if you wrote the above then I think you need to go back to your general basics on integration: $\int\frac{x^2-1}{x^4}dx=\int\left(\frac{... | 5 | [
0.0012359619140625,
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0.0027618408203125,
0.032958984375,
-0.002227783203125,
-0.1044921875,
0.033935546875,
0.0595703125... | 2,873 | 2873 | |
st: -mfx-, -xtprobit- and Arulampalam (1999)
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
st: -mfx-, -xtprobit- and Arulampalam (1999)
From "Ken Clark" <ken.clark@manchester.ac.uk>
To "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject st: -mfx-, -xtprobit- ... | 5 | [
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... | 2,874 | 2874 | |
Stephen Williamson: New Monetarist Economics
There is a wide class of monetary models that boil down to something like the following. We'll confine attention to a deterministic world - extending this to a stochastic environment isn't a big
deal. Given intertemporal optimization, the price of a nominal bond, q(t), in do... | 4 | [
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0.06884765625,
-0.... | 2,875 | 2875 | |
Pascal Triangle and Prime Numbers
up vote 9 down vote favorite
5
My question @ StackOverflow just got closed as not programing related so I'm posting here.
Please refer to the question @ SO, since:
• sorry, new users can only post a maximum of one hyperlink
• sorry, new users aren't allowed to use image tags
[E... | 4 | [
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Find the Cos(2alpha) when its in the 2nd quadrant
November 24th 2012, 08:24 AM #1
Find the Cos(2alpha) when its in the 2nd quadrant
Given
I know I need to set $cos(2\alpha)=1-2\sin^2(\alpha)$ which is then $\frac{31}{49}=1-2\sin^2(\alpha)$ which is then $2\sin^2(\alpha)=1-\frac{31}{49}$ now I thin... | 4 | [
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0.004058837890625,
-0.036865234375... | 2,877 | 2877 | |
Gauss Divergence Theorem
May 10th 2010, 11:51 PM #1
Newbie
Joined
May 2010
Posts
6
Gauss Divergence Theorem
Verify Gauss Divergence Theorem ∭∇.F dxdydz=∬F. NdA
Where the closed surface S is the sphere x^2+y^2+z^2=9 and the vector field F = xz^2i+x^2yj+y^2zk
I have tried to solve the left hand ... | 4 | [
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-0.0341796875,
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0.04589843... | 2,878 | 2878 | |
27. Stallings' Condition
Recall that our goal is to determine, for a given map of graphs of spaces such as the one shown below, whether the map $\Phi$ can be extended to a covering map $\widehat{\Phi}$.
Let $\mathcal{X}, \mathcal{X}'$ be graphs of spaces equipped with maps $\Xi' \to \Xi$, $\phi_{v'} : X_{v'} \to X_v$ ... | 4 | [
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-0.... | 2,879 | 2879 | |
Irreducible Polynomials
let a= sqrt(7 + 4 *sqrt(3)) find irr(a,Q) now let a= sqrt(7) + i find irr(a,Q)
$\sqrt{7 + 4\sqrt{3}}=2 + \sqrt{3}.$ now let a= sqrt(7) + i find irr(a,Q) $a^4 - 12a^2 + 64=0.$ show that the polynomial $x^4-12x^2+64$ is irreducible over $\mathbb{Z},$ and therefore over $\mathbb
{Q}.$ in order to ... | 4 | [
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... | 2,880 | 2880 | |
Help! Angles and Clocks
May 29th 2013, 05:49 AM #1
Newbie
Joined
May 2013
From
United States
Posts
9
Help! Angles and Clocks
How would I go about figuring this out?
Mario was studying angles and wondered if during his math class the minute and hour hands of the clock formed a right angle. If his... | 4 | [
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0.0346... | 2,881 | 2881 | |
Interest
Interest problems employ the rules of percentage problems but include the additional factor of time.
The interest (I) is the amount of money paid for the use of money.
The rate (R) is the percent charged on the basis of one year's use of the money.
The time (T) is the number of years, months and days over whi... | 5 | [
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... | 2,882 | 2882 | |
A nonlinear example
Next: Conclusion Up: number10 Previous: Fitting data to a
In the above example, we could solve for the optimal set of parameters because we could separate out the equations to give one just for linear with respect to the parameters, that is the parameters
do not show up as nonlinear functions o... | 4 | [
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-0.0021209716796875,
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2DPCA fractal features and genetic algorithm for efficient face representation and recognition
Abstract
In this article, we present an automatic face recognition system. We show that fractal features obtained from Iterated Function System allow a successful face recognition and outperform the classical
approaches. We ... | 4 | [
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ct
Given that electricity is generated in an alternator's magnetic field under the poles; then how can we demonstrate that the formula
Energy= volts x amps x Cos "thi" can be interpreted as an "in phase" dimensionless quantity of power?
CliveS
1. The quantity we obtain when we mult... | 4 | [
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T-spline Simplification and Local Refinement :: Institutional Repository
T-spline Simplification and Local Refinement
ThomasW. Sederberg, David L. Cardon
G. Thomas Finnigan, Nicholas S. North
Brigham Young University
Jianmin Zheng
Nanyang Technological University
Tom Lyche
Oslo University
Abstract
A typic... | 4 | [
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Page:Zur Thermodynamik bewegter Systeme (Fortsetzung).djvu/1
From Wikisource
This page has been
proofread
, but needs to be
validated
.
Continuation
(Presented in the session of February 6, 1908.)^[1]
7. Calculation of quantity H.
In order to express $H$ by the variables $U_{0}, v, \beta$, we insert the valu... | 4 | [
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Fractional Exponents
Fractional exponents are abbreviations for taking the roots of a number. For example, x^½ means square root of x. This makes sense because, by the rules of addition for exponents,
(x^½)(x^½) = x^(½+½) = x^1 = x
In the same way, x^⅓ is the cube root of x. We need to multiply x^⅓ by itself three ti... | 4 | [
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Re^2: standard deviation accuracy question
in reply to Re: standard deviation accuracy question
... | 4 | [
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Which sets of lattice points have rational generating functions?
up vote 13 down vote favorite
2
Let $P$ be a subset of $\mathbb N^d$ (or of some normal pointed affine semigroup), and suppose that $f:=\sum_{p\in P}\ t^p\in\mathbb Z[[t_1,\ldots,t_d]]$ is a rational function. What can be said
about the structure of $P$?... | 4 | [
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Calculus volume ..
June 4th 2009, 11:10 PM #1
Newbie
Joined
May 2009
Posts
8
Calculus volume ..
graph the area bounded by y= 1 x=4 and y = radical x
fidn the volume of the solid formed by revolving the area about the line y=1
find H.
use disc/ washer method
find all teh radiuses..
... | 5 | [
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-... | 2,891 | 2891 | |
Math Help
July 18th 2009, 04:45 PM #1
Junior Member
Joined
Jul 2009
Posts
67
Groups
Show that if $<br /> f:G \to H<br /> <br />$ is a homomorphism, $<br /> a \in G<br /> <br />$
and $<br /> f(a)<br /> <br />$ has a finite order in H then
$<br /> \left| a \right|<br /> <br />$ is infinite or $<br... | 5 | [
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The cgs System of Units
Physicists love (one of) the cgs systems and stubbornly keep using it - even so it is "forbidden". Take the Barrett for example, a rather recent book - you will find cgs units. Here we will see why
the cgs system still holds a lot of attraction, and how to convert cgs units to SI units.
As lo... | 4 | [
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Programming Assignment 2
Assigned: Feb. 8
Due: Mar. 8
Overview
The following problem is known as EXACT SET COVER: You are given a universal set U of elements and a collection W of subsets of U. The object is to find a subcollection Y of W such that every element
of U is in exactly one set in Y.
For instance, suppos... | 4 | [
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another sum of the series
June 24th 2006, 07:54 PM
Nichelle14
another sum of the series
How do I find the sum of this series?
summation of (n+1)/3^n
when I used the first few n's I didn't see a pattern.
June 24th 2006, 09:37 PM
malaygoel
Quote:
Originally Posted by Nichelle14
How do I ... | 4 | [
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Prey/Predator Model (need help asap please)
November 2nd 2008, 03:10 PM
Unt0t
Prey/Predator Model (need help asap please)
Hey I need help with a question regarding a prey/predator model. The question is in 2 parts (paraphrasing them). (i) if there are no predators, what is the solution (e.g will the population
... | 5 | [
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... | 2,896 | 2896 | |
Finding the area under a curve using integration of trig functions.
June 21st 2012, 09:14 AM #1
Newbie
Joined
Jun 2012
From
United Kingdom
Posts
2
Finding the area under a curve using integration of trig functions.
Hello!!
I had an integration exam today and I'm desperate to know if I answered t... | 5 | [
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Forecasting Continued: Using Simulation to Create Prediction Intervals Around Holt-Winters
NOTE: In this post we’ll be implementing prediction intervals around the Holt-Winters forecast using Monte Carlo simulation on the error correction/state space model equations for Holt-Winters. Read
this post first! I’d highly re... | 4 | [
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What is the domain of this function??
December 18th 2008, 12:04 PM #1
Junior Member
What is the domain of this function??
Last edited by Diligent_Learner; December 18th 2008 at 12:14 PM.
Is it possible for $4+x^2<4$?
Are the any values of $x$ which gives $4+x^2 \le 0$?
If not, then the domain is al... | 4 | [
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