content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
ear
Using infinitessimals in vector calculus
All right. So infinitessimals rock. One of the first examples of this is how you used them in elementary calculus to construct integration formula's like the disk method and the shell method for
finding volumes of some objects. But some people don't like them, so they've be... | 5 | [
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0.078125,
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GMAT
Author Message
Post subject: Re: What is the greatest possible area of a triangular region
RonPurewal Posted:
Mon Sep 12, 2011 4:32 am
me.parashar wrote:
Posts: thanks chr... | 4 | [
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Non-existenant solution to differencial equation
September 30th 2006, 07:37 PM
ThePerfectHacker
Non-existenant solution to differencial equation
Can, y=sin(x^2) be a solution to,
y''+py'+qy=0
With initial conditions, y(0)=A and y'(0)=B
Where p and q are continous in an open interval containing 0?
Oc... | 5 | [
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maximum value at given interval
February 22nd 2010, 10:16 AM #1
$<br /> f(x)=\sqrt{1+x^3}$
find the maximum value of |f''(x)| on the given Interval of $[0,2]$
calculated $f''(x)$ to be
$<br /> f''(x) = \frac{3x(x^3+4)}{4(x^3+1)^{3/2}}$
thot setting this to zero would give where the maximum value... | 4 | [
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Scientific Papers - Vi
378 ON THE PROPAGATION OP SOUND IN [402
be taken from 0 to x. As regards the values of the constants of integration (10) may be supposed to identify itself with (7) on the negative side. Thus
yF (x) = e-ik* \A - ~ f Y (A + Be***) d... | 4 | [
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File
Files Associated with a FREE Finite Volume Textbook
28 Feb 2012 (Updated 28 Feb 2012)
A series of finite volume m-files for solving the linear advection and shallow water equations.
FVlinearadvectionFOUpseudo1D
functio... | 4 | [
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Problem 9
Six letters are sent to six houses. If these letters are randomly delivered (each house receives one and only one letter), what is the probability that only two of them are delivered to the correct
addresses?
[Problem submitted by Steve Lee, LACC Professor of Mathematics.]
Solution for Problem 9:
There ar... | 4 | [
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Removing outliers using SAS
01-29-2012 02:51 AM #2
Location
Dallas, TX
Posts
311
Thanks
12
Thanked 94 Times in 93 Posts
01-29-2012 12:46 AM #1
Posts
61
Thanks
27
Thanked 1 Time in 1 Post
Re: Removing outliers using SAS
Removing outliers using SAS
I know "proc means" will give me... | 4 | [
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Tools for Project Euler: Prime Factorization
I started doing Project Euler a few weeks ago, and have noticed several techniques that have come up time and again to help solve the problems. So, rather than post solutions (which you can actually
find mine on my github, linked in an earlier post) I decided I’d post some ... | 4 | [
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Ramsey Numbers
Graphs, Ramsey Numbers
Ramsey Numbers
given a party of 6 people, show that 3 are mutual acquaintences or 3 are mutual strangers.
Select any one of the six party guests. He either knows, or does not know, 3 others. If he knows them, and any pair of these three knows each other then he joins this pair i... | 5 | [
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Decoupling Controller for a Distillation Column
This example uses a simple model of the distillation column shown below.
Figure 1: Distillation Column
In the so-called LV configuration, the controlled variables are the concentrations yD and yB of the chemicals D (tops) and B (bottoms), and the manipulated variables a... | 4 | [
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Triangle (Proving)
January 11th 2010, 03:33 AM #1
Member
Joined
Jun 2009
Posts
78
Triangle (Proving)
I'm getting very confused...there are too many formula for this!
Prove:
1. sin (A+B) + cos (A-B) $\equiv$ (sin A+ cos A)(sin B + cos B)
2. tan (A+B) - tan A $\equiv \frac{sin B}{cos A cos (A... | 4 | [
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Chapter 1 Postcensal and intercensal population estimates, Canada, provinces and territories
Chapter 1
Postcensal and intercensal population estimates, Canada, provinces and territories
1.1 Postcensal population estimates, Canada, provinces and territories
1.2 Intercensal population estimates, Canada, provinces and te... | 4 | [
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Eigenvectors of the Fourier matrix
up vote 3 down vote favorite
Let $n$ be a positive integer. The $n$ by $n$ Fourier matrix may be defined as follows:
$$ F^{*} = (1/\sqrt{n}) (w^{(i-1)(j-1)}) $$
where
$$ w = e^{2 i \pi /n} $$
is the complex $n$-th root of unity with smaller positive argument and $*$ means transpo... | 5 | [
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Applications of Solving Equations
Problem : If Greg rides his bike at 6 miles per hour, how far does he travel in 30 minutes? How long does it take him to ride 14 miles?
3 miles;
2hours
Problem : In a grape-eating contest, Mark eats grapes at a rate of 12 grapes per minute. How long does it take him to eat 108 grape... | 4 | [
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-... | 5,114 | 5114 | |
Position Of A Point Assignment Help, Coordinates - Transtutors
Position of a Point Assignment Help
POSITION OF A POINT WITH RESPECT TO A GIVEN LINE
Let the given line be ax + by + c = 0, and we have to check whether the point (α, β) lies above the line or below the line. To check first draw a perpendicular line from... | 4 | [
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GMAT
Author Message
Post subject: gmat Prep Math Question
abehrman Posted:
Mon Jan 25, 2010 11:55 pm
if $1,000 is deposited in a certain bank account and ... | 4 | [
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Product of Sum and Difference of Two Binomials | (a + b) (a - b) = a^2 - b^2
Product of Sum and Difference of Two Binomials
How to find the product of sum and difference of two binomials with the same terms and opposite signs?
(a + b) (a – b) = a(a – b) + b (a – b)
= a
^2
–
[DEL:ab:DEL]
+
[DEL:ba:DEL]
+ b
^2
... | 4 | [
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... | 5,117 | 5117 | |
[SOLVED] Problem having to do with bearing and planes
May 9th 2009, 09:17 PM #1
Newbie
Joined
May 2009
Posts
15
[SOLVED] Problem having to do with bearing and planes
Hi Everybody!
I have this math problem and I solved it but I'm not sure if I solved it correctly as finding the angle of the bearing a... | 4 | [
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binary
The Binary System
A pretty damn clear guide to a quite confusing concept by Christine R. Wright with some help from Samuel A. Rebelsky.
To understand binary numbers, begin by recalling elementary school math. When we first learned about numbers, we were taught that, in the decimal system, things are organized... | 4 | [
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0.0... | 5,119 | 5119 | |
line integral in a vector field
December 1st 2010, 08:25 PM #1
Junior Member
Joined
Mar 2009
From
Kentucky
Posts
72
line integral in a vector field
Given problem: Evaluate the line integral $\int_C \mathbf {F}\cdot d\mathbf r$, where C is given by the vector function $\mathbf r(t)$.
$\mathbf F(x... | 4 | [
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[SOLVED] Trigonometric problem
March 16th 2010, 07:35 PM
Solaris123
[SOLVED] Trigonometric problem
Please tell me the solution and the steps required to get solution to this.
Let sin(a)= 1/ sqrt(5) 0 < a < 90 degrees
cos(b)= 3/ sqrt(10) 0< b <90
then what is sin(a+b) equal to?
March 16th 2010, 07:... | 4 | [
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es
This paper sent to me in 2001 --djr
Chutes and Ladders
A Mathematical Analysis
... | 4 | [
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Patch calculus
This page describes the darcs patch calculus, which I am developing, inspired by the darcs-conflicts effort. That is a version of darcs intended to perform a lot better in the presence of merge
conflicts.
For David Roundy's write-up of the theory behind Darcs, please refer to the 'Theory of Patches' ch... | 4 | [
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0.... | 5,123 | 5123 | |
Analyzing and Computing Cash Flows
Introduction
Financial Toolbox™ cash-flow functions compute interest rates and rates of return, present or future values, depreciation streams, and annuities.
Some examples in this section use this income stream: an initial investment of $20,000 followed by three annual return paym... | 5 | [
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deriving fluid mechanics equations
November 22nd 2009, 08:15 AM #1
Newbie
Joined
Oct 2009
Posts
22
deriving fluid mechanics equations
her0'es a question on fluid mechanics:
i need help in showing how to arrive at the expressions
3 a)
Air obeying Boyles law [imath] p=k \rho [/imath] is in mot... | 4 | [
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-0.04248046875,
... | 5,125 | 5125 | |
non-diagonalizable matrix help?
November 28th 2009, 04:22 PM #1
Newbie
Joined
Oct 2009
From
Santa Barbara
Posts
5
non-diagonalizable matrix help?
Hello,
I've been asked to find a 3x3 matrix A such that
1) $A^3 - 4A^2 + 5A - 2I = 0$
and
2) The eigenvectors of A do not span $R^3$
... | 5 | [
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-0.00564575195... | 5,126 | 5126 | |
Finding the Potential Difference between the Two Points in Circuits
Finding the Potential Difference between the Two Points in Circuits with Examples
Finding the Potential Difference between the Two Points in Circuits
Potential difference between two points in circuit is the energy lost by the charge in being transfe... | 4 | [
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0... | 5,127 | 5127 | |
JEL Classifications1. Introduction2. The Model2.1. Cournot Competition2.2. Bertrand Competition2.3. Cournot-Bertrand Competition3. Welfare, Endogenous Choices, and Bargaining Rules4. Conclusions and Policy ImplicationsAcknowledgementsConflicts of InterestReferences
economies Economies Economies Economies 2227-7099 MDPI... | 4 | [
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Acoustic Sensor Network for Relative Positioning of Nodes
Open Access This article is
• freely available
• re-usable
Article
Acoustic Sensor Network for Relative Positioning of Nodes
^2.
Electronics Department, National University of Patagonia San Juan Bosco, Facultad de Ingeniería, Ciudad Universitaria, Ruta ... | 4 | [
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Number Fields
An (algebraic) number field is a subfield of $\mathbb{C}$ whose degree over $\mathbb{Q}$ is finite.
It turns out that number fields are Dedekind domains thus all their ideals factor uniquely into prime ideals. An example of a ring where this is not true is $\mathbb{Z}[\sqrt{-3}]$: take the ideal $I
= \l... | 4 | [
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Insights Into Algebra 1 . Workshop 5
Part 2: Understanding Basic Recursion
Recursion is the process of describing the next term in a sequence in relation to preceding terms. Recursive formulas can model population growth patterns, the distance traveled on a trip, the
interest earned on a bank account, and other real-l... | 4 | [
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I'm probably in the wrong forum but I have a question on series...
November 18th 2008, 12:46 PM #1
Junior Member
Joined
Mar 2008
Posts
31
I'm probably in the wrong forum but I have a question on series...
Hi, I found a question on the front page of the website of my examination board:
MEI - Mathemati... | 4 | [
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nalysis 201
home page mastermath functional analysis 2013
announcement: in the Spring 2014 semester there is a functional analysis seminar in Leiden!
Information on the aim and topics of the course and the compulsory book by Rudin can be found on the mastermath page of the course.
The course is taught by Marcel... | 4 | [
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Numerical Methods: Design, Analysis, and Computer Implementation of Algorithms
Preface xiii
Chapter 1: MATHEMATICAL MODELING 1
1.1 Modeling in Computer Animation 2
1.1.1 A Model Robe 2
1.2 Modeling in Physics: Radiation Transport 4
1.3 Modeling in Sports 6
1.4 Ecological Models 8
1.5 Modeling a Web Surfer and Google 1... | 5 | [
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Model Scale Parameterization for MCMC Efficiency - Lindons Log
Model Scale Parameterization for MCMC Efficiency
I recently came across a very interesting paper by Y. Yu and X. Meng[1] who present an interweaving strategy between different model parameterizations to improve mixing. It is well known that
different model... | 4 | [
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What are the best known bounds on the number of partitions of $n$ into exactly $k$ distinct parts?
up vote 5 down vote favorite
2
For example, if $n = 10$ and $k = 3$, then the legal partitions are $$10 = 7 + 2 + 1 = 6 + 3 + 1 = 5 + 4 + 1 = 5 + 3 + 2$$ so the answer is $4$. By choosing $k$ random elements of $\{1,\ldo... | 5 | [
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The Research Kitchen
Here’s a simple and intuitive way of looking at the geometry of a least squares regression:
Take the bottom left point in the triangle below as the origin O. For the linear model:
$$ Y=X\beta + \epsilon $$
Both $Y$ and \(X\beta\) are vectors, and the residual vector \(\epsilon\) is the differenc... | 4 | [
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apostol and archimedes
June 20th 2009, 12:55 AM
craigmain
apostol and archimedes
I am trying to understand apostol's argument confirming the integral area of a parabolic segment.
He get's to:
$\frac{b^3}{3}-\frac{b^3}{n} < A < \frac{b^3}{3}+\frac{b^3}{n}$ for every $n \ge 1$
There are three possibi... | 4 | [
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Estimate circumference of a set of scattered data
Total least squares (TLS) curve fitting minimizes the sum of squared
orthogonal distances from the data to the curve. The result is a
maximum likelihood estimator when both the x and y data are subject to
errors that are independently and identically distributed with z... | 5 | [
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0.003433227539... | 5,139 | 5139 | |
Image Compression
GROUPS:
Hi!!
I need a code (or pseudocode) of mathematica to compress a picture of n x m pixels.
Input a Jpeg
compress the jpeg
Graphics Wolfram and export jpeg then and before compressed
Please help me.
... | 4 | [
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esistive
Resistive power splitters
Revised D... | 4 | [
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Maya Calendar Conversions - In Summary: Calendar Conversion Methods
The method described in Examples 1 and 2 can be expressed in general terms as follows:
1. Compute the number of kins K.
2. Divide K by 18,980; the remainder is R.
3. Tzolkin date: Divide R by 13 and by 20 to obtain respective remainders A and B. To... | 4 | [
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0... | 5,142 | 5142 | |
solving system of ODEs - defective matrix
November 29th 2009, 08:58 PM
makarooney
solving system of ODEs - defective matrix
Hi,
In one of my assignments the prof asked us to find the general solution to a system of ODEs (linear, constant coefficient, etc) but whose coefficient matrix is defective. The sum o... | 4 | [
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0.03637... | 5,143 | 5143 | |
Polynomial and matrix
Suppose there is a matrix $A\in\mathbb{Q}$ that satisfies the polynomial $x^{3}+x^{2}-x-1$. Prove that 3 divides n.
1) There is no "n" in the given information. 2) It makes no sense to say that something "satisfies a polynomial". A number or matrix may satisfy a polynomial equation but you have n... | 5 | [
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Hoeomorphic topological spaces
March 18th 2009, 06:52 PM
Andreamet
Hoeomorphic topological spaces
Consider [0,1], [0,1), and (0,1) as subspaces of R with the standard topology. Prove that none of these spaces are homeomorphic.
Hint: try removing points and see what happens with cutsets.
March 19th 2009, 03... | 5 | [
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Special Relativity
The basic premise of the relativity is that no matter which frame of reference we consider, light always travels at the same velocity. Therefore, all frames of reference must be interchangeable.
In order to attain the greatest possible clearness, let us consider the example of the railway carr... | 4 | [
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Differential equation on -x^2
September 12th 2010, 08:46 AM #1
Differential equation on -x^2
The differential equation $y' + 2xy = 4e$ on $-x^2$ is given.
Solve the modified homogeneous equation.
What is the general solution to the equation?
Find that particulate solution which goes through T(0,2).
... | 5 | [
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Quick Review 1-4
Unit 1 - Objective 4 - Exponent Rules
1. A natural number power a^5 = a · a · a · a · a is repeated multiplication.
2. A negative power is a reciprocal.
... | 4 | [
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0.1455078125,
... | 5,148 | 5148 | |
Similar Right Triangles Lesson Plans & Worksheets | Lesson Planet
Similar Right Triangles Teacher Resources
Find Similar Right Triangles educational ideas and activities
Showing 1 - 20 of 377 resources
In this geometry worksheet, students examine similar right triangles as the basis for the foundation of trigonometr... | 4 | [
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0.07177734375,
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-0.04443359375,
0.002944... | 5,149 | 5149 | |
If ZFC has a transitive model, does it have one of arbitrary size?
up vote 17 down vote favorite
2
It is known that the consistency strength of $\sf ZFC+\rm Con(\sf ZFC)$ is greater than that of $\sf ZFC$ itself, but still weaker than asserting that $\sf ZFC$ has a transitive model. Let us denote
the axiom "There is a... | 5 | [
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0.0246582031... | 5,150 | 5150 | |
atenoid
Back to top of Surface Evolver documentation. Index.
Next: Kelvin foam example.
Back to top of tutorial.
Example: Catenoid.
The catenoid is the minimal surface formed between two rings not too far apart. In cylindrical coordinates, its equation is r = (1/a)cosh(az). In cat.fe, both the upper and lower rings a... | 4 | [
0.006134033203125,
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-0.047607421875,
0.050537109375,
-0.0549316406... | 5,151 | 5151 | |
IEC Fusion Technology
I have been mulling over the flow control problem for a small test reactor and I think I have at least a partial solution. First lets lay out the dimensions of the problem. Let us say that the
reactor is a sphere with a diameter of .9 meter and a core diameter of .3 meter. The volume of a sphere i... | 4 | [
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-0.0213623046875,
0.033447265625,
0.03125,... | 5,152 | 5152 | |
Simulink
Unit Root Nonstationarity
What Is a Unit Root Test?
A unit root process is a data-generating process whose first difference is stationary. In other words, a unit root process y[t] has the form
y[t] = y[t–1] + stationary process.
A unit root test attempts to determine whether a given time series is consist... | 4 | [
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MathGroup Archive: February 2008 [00218]
[Date Index] [Thread Index] [Author Index]
Re: Fourier Series Expansions and it's Coefficients question revised tia
• To: mathgroup at smc.vnet.net
• Subject: [mg85402] Re: Fourier Series Expansi... | 5 | [
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-0.06640625,
-0.0078... | 5,154 | 5154 | |
Math IA - Logan's Logo - International Baccalaureate Maths - Marked by Teachers.com
Math IA - Logan's Logo
Extracts from this essay...
Introduction
IBO INTERNAL ASSESMENT LOGAN'S LOGO MATHEMATICS SL TYPE II INTRODUCTION Logan has designed the logo at the right. The diagram shows a square which is divided into three ... | 4 | [
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-0.033203125,
-0.05... | 5,155 | 5155 | |
Curve Sketching
Re: Curve Sketching
Curve Sketching
I am having a little trouble with scaling curves, for example:
y = -2x^3
I know that;
y = af(x) is scaled in the y direction by a
y = f(ax) is scaled in the x direction by 1/a
So how can I tell if y = -2x^3 is y = -2f(x) or f(-2x)???
Aloha Nui means Goodbye.
y ... | 4 | [
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Statistical Estimation of the Protein-Ligand Binding Free Energy Based On Direct Protein-Ligand Interaction Obtained by Molecular Dynamics Simulation
Open Access This article is
• freely available
• re-usable
Article
Statistical Estimation of the Protein-Ligand Binding Free Energy Based On Direct Protein-Ligand ... | 4 | [
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-0.039794921875,
-0.0036773681640625,
0.05126953125,
0.009765625,
0.00154876708984375,
-0.041259765625,
-0.00361... | 5,157 | 5157 | |
probability of success
February 18th 2009, 06:17 AM
hven191
probability of success
I am trying to answer this problem for an exam.Can anyone please help me.I wonder if I should be using the formula prob=nCr (p^r) q^(n-r).
The probability for students from a certain university to pass Mathematics and Economi... | 4 | [
0.06396484375,
0.0245361328125,
-0.01055908203125,
-0.01611328125,
-0.014892578125,
0.0361328125,
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0.039306640625,
0.0206298828125,
0.10986328125,
-0.002288818359375,
-0.00946044921875,
0.0272216796875,
0.1259765625,
0.00970458984375,
-0.01019287109375,
-0.140625,
-0.... | 5,158 | 5158 | |
Trying to figure this out?
December 4th 2010, 11:07 AM #1
Member
Joined
Jan 2009
From
Ontario Canada
Posts
219
Trying to figure this out?
We were given 1 example to do math questions. But I don't get how I got the answer.
With with Log and Ln, but in this one it's Ln.
2.6=1.4e^(0.3t)
I h... | 4 | [
-0.019775390625,
-0.00665283203125,
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-0.099... | 5,159 | 5159 | |
st: RE: Re: Generating predicted values for OLS with transformed depende
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
st: RE: Re: Generating predicted values for OLS with transformed dependent variables
From "Nick Cox" <n.j.cox@durham.ac.uk>
To <statalist@hsphsun2.harvard.edu>
Su... | 5 | [
-0.080078125,
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0.022216796875,
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0.027... | 5,160 | 5160 | |
Solving linear equations at GCSE, including brackets and basic
fractions.
Click here to return to all Mathslearn guides
GCSE: Linear Equation Solving Part 1
We will be adding more basic notes for equation solving in the Key Stage 3 secti... | 4 | [
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0.0... | 5,161 | 5161 | |
proportions - heavy algebra needed
December 28th 2012, 02:54 PM
zachd77
proportions - heavy algebra needed
Found this problem looking in my old textbook:
If Attachment 26388, find the numerical value of the ratio Attachment 26389.
I started cross multiplying & I got stuck quite easily. How do I finish ... | 4 | [
-0.0145263671875,
-0.029296875,
0.00732421875,
-0.045166015625,
-0.049560546875,
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0.01336669921875,
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0.0908203125,
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0.044... | 5,162 | 5162 | |
Marginal Distribution
August 28th 2009, 11:18 PM
Sanza
Marginal Distribution
Suppose that X ~ Uniform(0,1). After obtaining a value of X we generate
Y|X = x ~ Uniform(x,1). Find the marginal distribution of Y.
August 28th 2009, 11:43 PM
Moo
Hello,
Look here : Conditional probability distribution ... | 5 | [
-0.00616455078125,
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-0.006317138671875,
-0.046142578125,
0.0361328125,
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0.09228515625,
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0.0322265625,
... | 5,163 | 5163 | |
absolute value
$|2x+1|\geq|3-x|$ Squaring both sides, $4x^2+4x+1\geq9-6x+x^2$ $(x+4)(3x-2)\geq0$ So, $x\geq-4$ and $x\geq\frac{2}{3}$ ie $x\geq\frac{2}{3}$ Or $x\leq4$ and $x\leq\frac{2}{3}$ ie $x\leq-4$
Last edited by alexmahone; June 13th 2009 at 07:25 AM.
You have: . . . . . $\left|2x\,+\,1\right|\,\leq\,\left|3\,... | 4 | [
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Marginal Likelihood and Model Evidence in Bayesian Regression - Lindons Log
Marginal Likelihood and Model Evidence in Bayesian Regression
The marginal likelihood or the model evidence is the probability of observing the data given a specific model. This is used in Bayesian model selection and comparison when computing... | 4 | [
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Mixture Models: The Twilight Zone of Statistics
Larry Wasserman
Mixture models come up all the time and they are obviosly very useful. Yet they are str... | 4 | [
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The experience curve
“When a person with experience meets a person with money, the person with experience gains money and the person with money gains experience.” Anon.
“Our strategy is to get big fast.” Jeff Bezos of Amazon.com
Twenty-first century economic winners are those that find non-equilibrium busines... | 4 | [
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-0.0... | 5,167 | 5167 | |
Logarithmic Equations Problem
July 24th 2007, 12:27 PM #1
Senior Member
Joined
Jul 2007
Posts
290
Logarithmic Equations Problem
ln X + ln X^2 = 3
Help I'm lost again =/
Also
Log X + Log(x - 21) = 2
The logarithm property that was the original reason the were invented:
$<br /> \... | 4 | [
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0.02587... | 5,168 | 5168 | |
Perpetual Motion Machine of the First Kind (PMM-1)
A machine which continuously produces work from nothing is called a perpetual motion machine of the first kind. As per Fig. 4.4, W (work) is produced without taking any energy from surroundings. It
creates its own energy. This concept violates the first law of thermody... | 5 | [
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40 CFR Part 425, Appendix C to Part 425 - Definition and Procedure for the Determination of the Method Detection Limit 1
View PDF at GPO Pt. 425, App. C
Appendix C to Part
425
—Definition and Procedure for the Determination of the Method Detection Limit
^1
The method detection limit (MDL) is defined at the minimu... | 4 | [
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Formation of Tides
Moon's gravity is only part of the story for the production of tides, the realistic situation is considerably more complicated. Actually, we can conclude that the tide is formed by 3 various kinds of
forces with some assumption. Now, we are going to investigate the "secret" part of the tides.
In... | 4 | [
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0.037841... | 5,171 | 5171 | |
Help with a long applied DE problem.
November 29th 2008, 05:22 PM
Showcase_22
Help with a long applied DE problem.
Quote:
Consider two tanks, A and B, each holding 200 litres of water. A pipe pumps water from tank A to tank B at a rate of 5l/min. At the same time another pipe pumps liquid from tank B to tan... | 5 | [
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0.126953125,
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-0.0... | 5,172 | 5172 | |
ECON 110 Multiplier Problem Commentary
• ECON 110 Multiplier Problem Commentary
ECON 110 Multiplier Problem Commentary
St. Charles Community College
ECON 110 Principles of Macroeconomics
Answers and Commentary on Class Discussion Problem
(This problem is taken from an Application Question which is published in th... | 5 | [
-0.0927734375,
0.00946044921875,
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... | 5,173 | 5173 | |
linear algebra quick question
June 7th 2008, 11:11 AM #1
Newbie
Joined
Jun 2008
Posts
1
linear algebra quick question
is a positive definite matrix necessarily symmetric?
Also if A is an nxn matrix and is singular (not invertible) then there is an x in Rn such that Ax=0 right?
No! for example th... | 5 | [
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0.050048828125,
-... | 5,174 | 5174 | |
Logs - GoodWOOD Forest Products Corp.
Our Products
Hardwood Lumber
Softwood Lumber
Logs
Request a Quote
Softwood
Cedar Fir Hemlock Pine Redwood Spruce
Other species avail... | 4 | [
0.04638671875,
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0.025390625,
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The Rayleigh Distribution
\(\newcommand{\R}{\mathbb{R}}\) \(\newcommand{\N}{\mathbb{N}}\) \(\newcommand{\E}{\mathbb{E}}\) \(\newcommand{\P}{\mathbb{P}}\) \(\newcommand{\var}{\text{var}}\) \(\newcommand{\sd}{\text{sd}}\) \(\
newcommand{\cov}{\text{cov}}\) \(\newcommand{\cor}{\text{cor}}\) \(\newcommand{\skew}{\text{skew... | 5 | [
0.0274658203125,
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0.0181884765625,
0.013427734375,
-0.038818359375,
0.011962890625,
... | 5,176 | 5176 | |
Mathematics and Computer Education - Home Page
MATHEMATICS AND COMPUTER EDUCATION is indexed and/or abstracted in the United States by Current Index to Journals in Education, Ulrich's International Periodicals Database, Current Index to
Statistics, Education Index, Education Abstracts, Educational Research Abstracts on... | 5 | [
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-... | 5,177 | 5177 | |
MathGroup Archive: February 2004 [00538]
[Date Index] [Thread Index] [Author Index]
Re: Bernoulli variable algebra
• To: mathgroup at smc.vnet.net
• Subject: [mg46539] Re: Bernoulli variable algebra
• From: Dr Bob <drbob at bigfoot.co... | 5 | [
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0.15234375,
-0.115234375,
0... | 5,178 | 5178 | |
Math Forums @ Math Goodiestesting headertesting left navtesting footer
Math Goodies is a free math help portal for students, teachers, and parents.
... | 4 | [
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0.10400390625... | 5,179 | 5179 | |
Multiplicative Convolution for Binomial Coefficients
up vote 6 down vote favorite
3
I know Vandermonde's convolution for binomial coefficients:
$$\sum_{j=0...k} \binom{n}{j} \binom{m}{k-j} = \binom{n+m}{k}$$
Is there a similar multiplicative convolution? More precisely, is there a simple formula for the coefficients... | 5 | [
0.034912109375,
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0.035888671875,
-0.025146484375,
0.0020751953125,
0.1494140625,
0.0000739097... | 5,180 | 5180 | |
to
Your Ideal Weight
History of Weight Formulas
The first commonly used formula for finding a person's ideal body weight was devised in 1871 by a French doctor idd Broca. In 1974 a doctor idd Devine published basically the same formula only using
the metric system, for the purpose of calculating the dosage of medic... | 4 | [
0.0017547607421875,
0.010009765625,
0.03955078125,
0.037353515625,
-0.07080078125,
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0.10400390625,
-0.05224609375,
0.05126953125,
-0.0240478515625,
0.0087890625,
0.000934600830078125,
0.012939453125,
-0.08642578125,
-0.01458740234375,
0.04638671875,
... | 5,181 | 5181 | |
help with ln and log
August 8th 2009, 09:45 AM #1
Newbie
Joined
Aug 2009
Posts
9
help with ln and log
I have been trying to solve it for a few days for my nephew but I am not able to remember what I learned back in school 15 years ago, please any help is appreciated
ln(2x-1) + (ln(2x-1)^2 = 4
A... | 4 | [
0.031982421875,
-0.0007476806640625,
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0.095703125,
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0.050048828125,
0.055419921875,
-0.04052734375,
0.08251953125,
-0.1020507812... | 5,182 | 5182 | |
December 2
Yesterday, Dan threw out this tweet:
So, naturally, I had to try this:
If I were using this in class, I'd probably
animate it
so students had to choose values for velocity, start height and distance and hit "GO."
Download
original .ggb file.
Nevan: Dad when do you have to go back to work?
Me: I'm of... | 4 | [
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0.054931640625,
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0.09375,
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0.07958984375,
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-0.060546875,
0.034423828125,
0.005218505859375,... | 5,183 | 5183 | |
Learning Clojure
Nothing specifically to do with clojure, but I figure that a fair number of readers of this blog must love algorithms and visualizations, and this:
http://bost.ocks.org/mike/algorithms/
is one of the best things I've ever read on those subjects. I really wish I'd written this! Or even was capable of ... | 5 | [
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0.02783203125,
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-0.061767578125,
-0.004486... | 5,184 | 5184 | |
Multi-scale agent-based modeling on melanoma and its related angiogenesis analysis
Abstract
Background
Recently, melanoma has become the most malignant and commonly occurring skin cancer. Melanoma is not only the major source (75%) of deaths related to skin cancer, but also it is hard to be treated by
the conventiona... | 4 | [
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0.081054687... | 5,185 | 5185 | |
A second megabyte of memory
1.1 Pharmacokinetic models with an analytic solution
Pharmacokinetics is the study of the absorption and elimination of drugs and their metabolites in the body. As described in the wikipedia article there are several parameters, such rate constants,
volumes of distribution and clearances, t... | 4 | [
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[SOLVED] SAT math page 674 #19
September 28th 2008, 04:31 AM #1
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[SOLVED] SAT math page 674 #19
If k, n, x and y are positive numbers satisfying $x^\frac{-4}{3}=k^{-2}$ and $y^\frac{4}{3}=n^2$, what is $(xy)^\frac{-2}{3}$ in terms of n and k?
Thanks in advance!! (:
... | 4 | [
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Waves/Sine Waves
From Wikibooks, open books for an open world
A Wikibookian suggests that this book or chapter be merged into Waves/Waves in one Dimension because:
Most if its content is already somewhere else
Please discuss whether or not this merge should happen on the discussion page... | 4 | [
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al
The parallax method is a technique that has been used for many years to measure the distance between the Earth and other stars. Determining the distance to a star is a difficult task because we
cannot ... | 4 | [
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-0... | 5,189 | 5189 | |
Crypto Series – ElGamal Cryptosystem
In our last post we learnt about the Discrete Lograithm problem, why it is a difficult problem and how we can attempt to solve it if the numbers are manageable. Of course, in a real setting we
wouldn't use 16 bit numbers as in my example, but at least 1024 bit numbers nowadays (and ... | 5 | [
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0.01470947265625... | 5,190 | 5190 | |
Differentials
The Total Differential
In single variable calculus, we discussed the idea of the differential. We now define the differential for functions of two variables.
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━... | 5 | [
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0.... | 5,191 | 5191 | |
determinant calculation of integer matrices
"Bruno Luong" <b.luong@fogale.findmycountry> wrote in message
news:kjklfi$il6$1@newscl01ah.mathworks.com...
> Someone asks me off line why det (magic(9) - 41) = 0. Here is how I see
> it:
>
> It is easy to check sum( magic(9) ) / 9 = 41
>
> Thus
> sum(magic(9) - 41) = 0.
>
... | 5 | [
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ing and Sim
MathModelica--An Object-Oriented Mathematical Modeling and Simulation Environment
5. Using the Symbolic Internal Representation
In order to satisfy the requirement of a well-integrated environment and language, the new MathModelica internal representation was designed with a Mathematica-compatible version... | 4 | [
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0.02111816406... | 5,193 | 5193 | |
Euler's Analysis of the Genoese Lottery - Probabilities in the Genoese Lottery (continued)
p[k,i] k = 1 k = 2 k = 3 k = 4
(n-t)(n-t-1)(n-t-2) (n-t)(n-t-1... | 4 | [
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IntroductionTheoretical BackgroundTransient Model Based on the Laplace WaveletCorrelation AnalysisProposed Doppler Transient Model Based on Laplace Wavelet and Spectrum Correlation AssessmentDoppler Distortion of the Transient Model Based on the Laplace WaveletEnvelope Spectrum Correlation AssessmentParameter Identific... | 4 | [
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... | 5,195 | 5195 | |
Question in rings
October 19th 2010, 04:04 AM
raed
Question in rings
Hi All:
I need the solution of the following question:
Let (R,+,.) satisfy all conditions of a ring except the condition of a+b=b+a for all a ,b in R ( abelian with +); If 1 in R (R is arig with unity) prove that a+b=b+a for all a,b in... | 5 | [
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MATDS
Russian version
MATDS
Sorry, but this page and MATDS are under construction now!
MATDS is a MATLAB-based program for dynamical system investigat... | 4 | [
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... | 5,197 | 5197 | |
MathGroup Archive: November 2006 [00726]
[Date Index] [Thread Index] [Author Index]
Re: general form of a n-derivative
• To: mathgroup at smc.vnet.net
• Subject: [mg71560] Re: [mg71542] general form of a n-derivative
• From: Andrzej K... | 5 | [
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1. Introduction2. Materials and Methods2.1. Soil Sampling and Analysis2.2. Spatial Autocorrelation2.3. Geostatistics Method2.4. Data Treatment with Computer Software3. Results and Discussion3.1. Spatial Pattern Analysis of Heavy Metals Using the Spatial Autocorrelation Analysis3.2. Spatial Pattern Analysis of Heavy Met... | 4 | [
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