content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Permutation Matrix
January 31st 2010, 01:14 AM #1
Junior Member
Joined
Jan 2010
Posts
30
Permutation Matrix
Find the permutation matrix P so that PA can be factored into the product LU, where L is lower triangular with 1's on its diagonal and U is upper triangular for these matrices.
$A = \left[ \be... | 5 | [
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0.035400390625,
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-0.038330078125,
0.05419921875,
0.041748046875,
0.018310546875,
-0.01263427734375,
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0.07763671875,
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... | 28,300 | 28300 | |
Math Help
$\binom{n}{2} = \frac{n(n-1)}{2} = \frac{n^2 - n}{2}$. Also, $\binom{\binom{n}{2}}{2} = \frac{\frac{n^2 - n}{2} \frac{n^2 - n - 2}{2}}{2} = \frac{(n^2 - n)(n^2 - n - 2)}{8}$. So you can simplify the
RHS. Then use algebra.
Hello, Swarnav! $\text{Prove: }\:{n+1\choose4} \:=\:\frac{1}{3}{{n\choose2}\choose2}\;... | 5 | [
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Details
Hewlett-Packard HP-48G
Datasheet legend
Ab/c: Fractions calculation
AC: Alternating current
BaseN: Number base calculations
Card: Magnetic card storage Years of Display type: Graphical display
Cmem: Continuous memory production:
... | 5 | [
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... | 28,302 | 28302 | |
Need help have worked out these problems need to see if I got them correct
November 13th 2011, 09:10 AM
smilez750
Need help have worked out these problems need to see if I got them correct
Ok so here are the questions with my answers
Tell how many triangles there are and solve each triangle completely
... | 4 | [
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Stimulated Raman Adiabatic Passage in a Dense Medium
Advances in Physical Chemistry
Volume 2010 (2010), Article ID 798419, 8 pages
http://dx.doi.org/10.1155/2010/798419
Research Article
Stimulated Raman Adiabatic Passage in a Dense Medium
^1Faculty of Sciences, Holon Institute of Technology, 52 Golomb Steet, Holo... | 4 | [
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-0... | 28,304 | 28304 | |
Intersection of Line and Hyperbola
September 29th 2011, 01:13 AM
moriman
Intersection of Line and Hyperbola
A hyperbola is intersected by line 1 at $(u_1, v_1)$ and $(v_1, u_1)$
and by line 2 at $(u_2, v_2)$ and $(-v_2, -u_2)$
Lines 1 and 2 intersect at $(u_1+v_1, 0)$
These can be written
$u_1+... | 4 | [
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-0.08... | 28,305 | 28305 | |
Log from earlier question, just need confirmation!
November 20th 2008, 06:46 AM #1
Newbie
Joined
Nov 2008
Posts
23
Log from earlier question, just need confirmation!
I have log4(x^2 - 9) - log4(x + 3) = 3
I get 4^3 = (x^2 - 9) / (x + 3 )
and then 64 = (x - 3)
x = 67
Correct?
... | 4 | [
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search results
Expand all Collapse all Results 1 - 4 of 4
1. CJM 2011 (vol 64 pp. 44)
Surfaces of Rotation with Constant Mean Curvature in the Direction of a Unitary Normal Vector Field in a Randers Space
We consider the Randers space $(V^n,F_b)$ obtained by perturbing the Euclidean metric by a translation, ... | 4 | [
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... | 28,307 | 28307 | |
Math Help - Calculus - Antiderivatives and the Riemann Integral
Technical Tutoring Home · Site Index · Advanced Books · Speed Arithmetic · Math Index · Algebra Index · Calculus Index · Trig Index · Chemistry Index · Gift Shop · Harry Potter DVDs, Videos, Books,
Audio CDs and Cassettes · Lord of the Rings DVDs, Video... | 5 | [
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0.... | 28,308 | 28308 | |
One more equation
July 10th 2007, 02:33 PM #1
Junior Member
Joined
Jul 2007
Posts
43
One more equation
I'm not sure how to begin attacking this one.
Given the equation $4x^2 - 4xy + 1 - y^2 = 0$
use the Quadratic Formula to solve for
(a) x in terms of y (b) y in terms of x.
Can I get a... | 4 | [
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Existence and Convergence Theorems of Best Proximity Points
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 101439, 6 pages
http://dx.doi.org/10.1155/2013/101439
Research Article
Existence and Convergence Theorems of Best Proximity Points
^1Department of Mathematics, Ayatollah Boroujerdi University, Bo... | 5 | [
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Simple ODE.
July 3rd 2010, 11:59 AM #1
Super Member
Joined
Sep 2008
Posts
607
Simple ODE.
A metal rod is 60cm long and is heated at one end. The temperature at a point on the road at a distance xcm from the heated end is denoted by T degrees Celsius At a point half way along the rod T
= 290 and
... | 4 | [
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inside-R
serial.test {vars}
Test for serially correlated errors
Description
This function computes the multivariate Portmanteau- and Breusch-Godfrey test for serially correlated errors.
Usage
serial.test(x, lags.pt = 16, lags.bg = 5, type = c("PT.asymptotic",
"PT.adjusted", "BG", "ES") )
Arguments
x
Object ... | 4 | [
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Base cases and identities
From HaskellWiki
(Difference between revisions)
(Category:Idioms) (Added a link to Wikipedia for "endomorphism")
← Older edit
Line 7... | 5 | [
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... | 28,313 | 28313 | |
System of Linear Equation
August 1st 2012, 09:04 PM #1
Newbie
Joined
Jul 2012
From
NZ
Posts
5
System of Linear Equation
To solve a system of 3 linear equations, a student splits it into 2 subsystems as follows:
SYSTEM 1
(1/2)x-5y=-20
x-(4/5)y=6
SYSTEM 2
(3/5)x-2y=-4
(1/2)x-5... | 4 | [
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differential equations
November 15th 2012, 01:45 PM #1
Junior Member
Joined
Oct 2012
From
Australia
Posts
43
differential equations
Hi,
I need a bit of help with this question:
'A polluted river with a nutrient concentration of 90g.m^3 is flowing at a rate of 100m^3/day into an estuary of v... | 5 | [
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Math Help
May 26th 2009, 09:13 AM #1
Member
Joined
May 2009
Posts
93
find the equation of a line that is tangent to the graph of the given function at the specified point.
y=x^5-3x^3-5x+2;(1,-5)
I have an exam coming up on these and I pulled this out of my book to practice...if you could show ho... | 4 | [
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Induction Questions
March 14th 2010, 08:58 AM #1
Newbie
Joined
Mar 2010
Posts
6
Induction Questions
I have quite a few questions and so i just made it an image. Also attached.
Induction Questions
Only need help with questions 2 and 5
Oh and so far my lecturer has taught well-ordering, strong... | 5 | [
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Exact Solutions for Certain Nonlinear Autonomous Ordinary Differential Equations of the Second Order and Families of Two-Dimensional Autonomous Systems
International Journal of Differential Equations
Volume 2010 (2010), Article ID 436860, 13 pages
http://dx.doi.org/10.1155/2010/436860
Research Article
Exact Solution... | 5 | [
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Solve the following inhomogeneous recurrence relation...
October 29th 2012, 08:58 AM #1
Junior Member
Joined
Oct 2012
From
Ohio
Posts
48
Solve the following inhomogeneous recurrence relation...
Solve the inhomogeneous recurrence relation
a[n]=3a[n-1]+n^2-3 with a[0]=1
Any help please? I tri... | 5 | [
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non-homogeneous differential equations
August 6th 2009, 07:06 AM
Jonny-123
non-homogeneous differential equations
i have the following differential equation:
y''(x)+4y'(x)+20y(x)=10e^(-2x)*cos(rx)
i know that the solution = general solution + particular solution.
i know how to find the homogeneous... | 5 | [
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triangle inequality
April 24th 2010, 08:57 AM
sfspitfire23
triangle inequality
Could I use thhe triangle inequality to perform the following:
$\frac{|a-b|}{2}\leq \frac{|a|}{2} - \frac{|b|}{2}$?
I cant seem to find a proof of why you can do this is if you can...
April 24th 2010, 09:16 AM
nimon
I... | 4 | [
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Need help with p-value question
July 22nd 2009, 08:02 AM #1
Newbie
Joined
Jul 2009
Posts
9
Need help with p-value question
The question:
"According to an exit poll in the 2006 Virginia senatorial election, 50.1% of the sample size 2011 reported voting for James Webb. Is this enough evidence to predi... | 5 | [
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What is the limit of x^(1/x) as x approaches infinity?
May 19th 2012, 09:40 PM #1
Junior Member
Joined
May 2010
Posts
35
What is the limit of x^(1/x) as x approaches infinity?
What is the limit of x^(1/x) as x approaches infinity?
There is an explanation in the last box at the very end of this page:... | 5 | [
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the encyclopedic entry of product-moment correlation coefficient
In
statistics
, the
Pearson product-moment correlation coefficient
(sometimes referred to as the
MCV
or
PMCC
, and typically denoted by
r
) is a common measure of the
correlation
between two variables
X
and
Y
. In accordance with the usual... | 4 | [
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-0.005... | 28,324 | 28324 | |
the encyclopedic entry of Effect_size
In
statistics
,
effect size
is a measure of the strength of the relationship between two variables. In scientific experiments, it is often useful to know not only whether an experiment has a
statistically significant
effect, but also the
size
of any observed effects. In pra... | 4 | [
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Evaluating Mods/Absolute Values Quicker
alphabeta1234 wrote:
I have an equation that looks like this |x – 3| + |x + 1| + |x| = 10 and I want to find the x that satisfies the condition.
I know that -1,0, and 3 are my pivot points that I have to test.
x<-1
-1<=x<=0
0<x<=3
Knowing these are the three ranges where the ... | 4 | [
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... | 28,326 | 28326 | |
Surfaces of Constant Curvature in the Pseudo-Galilean Space
International Journal of Mathematics and Mathematical Sciences
Volume 2012 (2012), Article ID 375264, 28 pages
http://dx.doi.org/10.1155/2012/375264
Research Article
Surfaces of Constant Curvature in the Pseudo-Galilean Space
^1Department of Mathematics, Fa... | 4 | [
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0.0830078125,
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0.044921875,
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-0.016723... | 28,327 | 28327 | |
Function of a cylinder
August 2nd 2006, 01:58 PM #1
Newbie
Joined
Jul 2006
Posts
15
Function of a cylinder
A can producer must make a cylindrical can that contains a volume of 16 ¶ cubic centimeters. Find the function this producer must analyze to make sure the amount of material is the least
possibl... | 5 | [
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... | 28,328 | 28328 | |
How to convert cartesian equations into vector or parametric equations?
December 2nd 2008, 04:57 AM #1
How to convert cartesian equations into vector or parametric equations?
Ok I am having difficulties converting cartesian into equations to parametric/vector equations.
By using the example provided could so... | 4 | [
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can you help me with this exercise?
October 26th 2008, 08:58 AM #1
Newbie
Joined
Sep 2008
Posts
4
can you help me with this exercise?
how much I must deposit now in a 12% account (annual interest) if I want to be able to withdraw $20 000 at the end of each of the next five years.
are we doing simple... | 4 | [
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Seismic Design Value Evaluation Based on Checking Records and Site Geological Conditions Using Artificial Neural Networks
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 242941, 12 pages
http://dx.doi.org/10.1155/2013/242941
Research Article
Seismic Design Value Evaluation Based on Checking Records and S... | 4 | [
-0.014892578125,
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... | 28,331 | 28331 | |
Investigation on Locking and Pulling Modes in Analog Frequency Dividers
Journal of Electrical and Computer Engineering
Volume 2013 (2013), Article ID 246742, 9 pages
http://dx.doi.org/10.1155/2013/246742
Research Article
Investigation on Locking and Pulling Modes in Analog Frequency Dividers
Seconda Università degli... | 4 | [
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Polynomial
Question>> the polynomial x^4+5x+a is denoted by p(x). It is given that x^2-x+3 is a factor of p(x). part (1) Find the value of a in p(x). Can somebody please reply to this quickly. Thank you
(Talking)
$(x^2 - x + 3)(a_2x^2 + a_1x + a_0) = x^4 + 5x + a$ so [tex] we get $a_2x^4 + a_1x^3 + a_0x^2 - a_2x^3 - a... | 4 | [
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... | 28,333 | 28333 | |
the ant on a rubber rope
July 5th 2012, 11:31 PM
denism
the ant on a rubber rope
I cannot solve the problem of the ant on a rubber rope (Ant on a rubber rope - Wikipedia, the free encyclopedia)
in the case of a rope stretching exponentially:
the target end of the rope y(t) goes away exponentially
y... | 5 | [
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Taylor Expansion
December 8th 2009, 07:56 PM #1
Super Member
Joined
Feb 2008
Posts
535
Taylor Expansion
What is the Taylor Expansion of:
sin(sinx) at x=0 up to terms of order 3 ?
I know that the Taylor of sin(x) is: x - x^3/3 + ...
But then what is the Taylor of sin(x - x^3/3 + ...) ?
... | 5 | [
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... | 28,335 | 28335 | |
Global Exponential Stability Criteria for Bidirectional Associative Memory Neural Networks with Time-Varying Delays
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 576721, 13 pages
http://dx.doi.org/10.1155/2013/576721
Research Article
Global Exponential Stability Criteria for Bidirectional Associative M... | 5 | [
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Sorry Guys - One last Improper Integration question (e^x)/ ((e^x) -1) Why Divergent??
December 17th 2012, 05:31 PM #1
Junior Member
Joined
Aug 2012
From
Maryland
Posts
45
Sorry Guys - One last Improper Integration question (e^x)/ ((e^x) -1) Why Divergent??
Sorry. I'm coming to the end of my four hour... | 5 | [
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Mathematical Induction Problem
April 6th 2011, 12:28 PM #1
Newbie
Joined
Apr 2011
Posts
5
Mathematical Induction Problem
Ok guys, I really need help with this, I can understand almost everything in my class except induction. Can someone please help me with a solution to the following problem?
Use ma... | 4 | [
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Completing the Square Word Problem
June 14th 2009, 01:00 PM #1
Member
Joined
Jun 2009
Posts
86
Completing the Square Word Problem
Alright I'm not exactly sure what category this question falls under, but it was a question part of a "completing the square" unit.
A rectangle is 6m longer than wide. Th... | 4 | [
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Change combinatorix
August 28th 2007, 08:21 AM #1
Junior Member
Joined
Apr 2006
Posts
26
Change combinatorix
So i know I need to use combinatorix for this, but I'm not exactly sure how.
4.3.19 In how many ways can you make change for a dollar, using pennies, nickels, dimes, quarters, and half-dollar... | 5 | [
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An Algorithm for Generating a Family of Alternating Knots
ISRN Algebra
Volume 2012 (2012), Article ID 804829, 12 pages
http://dx.doi.org/10.5402/2012/804829
Research Article
An Algorithm for Generating a Family of Alternating Knots
Departamento de Ciencias de la Computación, Instituto de Investigaciones en Matemátic... | 4 | [
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-0.... | 28,341 | 28341 | |
Improved DV-Hop Node Localization Algorithm in Wireless Sensor Networks
International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 213980, 7 pages
http://dx.doi.org/10.1155/2012/213980
Research Article
Improved DV-Hop Node Localization Algorithm in Wireless Sensor Networks
School of Electron... | 4 | [
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Complete Convergence of the Maximum Partial Sums for Arrays of Rowwise of AANA Random Variables
Discrete Dynamics in Nature and Society
Volume 2013 (2013), Article ID 741901, 7 pages
http://dx.doi.org/10.1155/2013/741901
Research Article
Complete Convergence of the Maximum Partial Sums for Arrays of Rowwise of AANA R... | 5 | [
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How many words, with or without meaning can be made from the
Author Message
TAGS:
How many words, with or without meaning can be made from the [#permalink] 28 Dec 2009, 02:25
... | 4 | [
0.078125,
0.008544921875,
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Difficult A2 logarithm
Last edited by kingkaisai2; May 21st 2006 at 01:36 AM.
kingkaisai2 2^x = 3^y ----(1) x +y = 1 ---------(2) Take the logs of both sides of (1), x*log(2) = y*log(3) ----(1a) From (2), y = 1-x Substitute that into (1a), x*log(2) = (1-x)log(3) x*log(2) = log
(3) -x*log(3) x*log(2) +x*log(3) = log(3)... | 4 | [
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Find the angle help
April 21st 2008, 11:49 AM #1
Newbie
Joined
Mar 2008
Posts
3
Find the angle help
Ok I need help finding the angle and I attached a crude picture of the drawing. just to clarify the circles are tangent to one another and the ray that is created by the angle and the radii are
perpend... | 4 | [
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0... | 28,346 | 28346 | |
Counting Identical Elements
September 12th 2010, 04:23 AM #1
Member
Joined
Jul 2009
Posts
132
Counting Identical Elements
How many arrangements of letters of word TRANSITION are possible if
the Is and Ns and Ts are together.
Here is my attempt:
Group Is, Ns, and Ts together, and arrange: 5! ... | 4 | [
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0.0145263671875,
-0.0927734375,
-0.... | 28,347 | 28347 | |
[SOLVED] I don't know
October 22nd 2009, 04:15 PM #1
Member
Joined
Sep 2009
Posts
158
[SOLVED] I don't know
what to do for this one:
Given: 3 vectors, a, b, c, are linearly independent in a vector space V
Asked: Show that 3a, 2a-b, a + c are also linearly independent
Assume 3a, 2a-b, a+c ar... | 5 | [
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-0.00135040... | 28,348 | 28348 | |
[SOLVED] Incribed Rectangle and Triangle
March 27th 2009, 05:46 AM
amla
[SOLVED] Incribed Rectangle and Triangle
A rectangle of base b and height h and an isosceles triangle of base b are inscribed in a circle of radius one as shown. For what values of b and h will the rectangle and triangle have the same
ar... | 4 | [
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0.0018157958984375,
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0.0966796875,
-0.019287109375,
... | 28,349 | 28349 | |
Proving continuity at a point.
December 3rd 2010, 02:29 AM #1
Junior Member
Joined
Oct 2010
Posts
71
Proving continuity at a point.
Show that f(x) = x^3 is continuous at 1 (from the definition)
(For all epsilon >0) (There exists delta >0) (For all x E X) if |x-1| < delta this implies
|x^3 - 1^3|... | 5 | [
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0.0162353515625,
-0.026123046875,
-... | 28,350 | 28350 | |
Calculate the volume of a part of a sphere inside a cylinder
June 13th 2009, 05:05 PM #1
Calculate the volume of a part of a sphere inside a cylinder
Find the volume of the part of the sphere $r^2+z^2=a^2$ which is inside the cylinder $r=a \sin (\theta)$ where $(r,z,\theta)$ are the cylindrical coordinates.
... | 5 | [
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0... | 28,351 | 28351 | |
the encyclopedic entry of avogadros-number
The
Avogadro constant
(symbols:
L
,
N[A]
), also called
Avogadro's number
, is the number of "elementary entities" (usually
atoms
or
molecules
) in one
mole
, that is (from the definition of the mole) the number of atoms in exactly 12
grams
of
carbon-12
. The... | 4 | [
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0.008483... | 28,352 | 28352 | |
Large Solutions of Quasilinear Elliptic System of Competitive Type: Existence and Asymptotic Behavior
International Journal of Differential Equations
Volume 2010 (2010), Article ID 104625, 17 pages
http://dx.doi.org/10.1155/2010/104625
Research Article
Large Solutions of Quasilinear Elliptic System of Competitive Typ... | 5 | [
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-0.09521484375... | 28,353 | 28353 | |
Calculus Trig Integration/substitution, by parts, improper integrals?
March 22nd 2013, 10:37 AM #1
Newbie
Joined
Mar 2013
From
mathville
Posts
22
Calculus Trig Integration/substitution, by parts, improper integrals?
) lower bound 2 upper bound 4 ∫ sqrt(9x^2-25)/ x^3 dx
2) lower bound 0 upper bou... | 5 | [
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0... | 28,354 | 28354 | |
REal Zeros
Quote:
OMG!!! Thank you so much. i have been waiting for help on this for 2 hours you are the best! i was stuck because i didnt know what multiplicity was. so i got confuse ass to is the 2 multipicity
or 1 because its a positive and a negative. well thank you so much.
Quote:
let
$... | 4 | [
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0.0225830078125,
0.00170135498046875,
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... | 28,355 | 28355 | |
Herstein's Famous Problem
November 1st 2007, 05:17 PM #1
Global Moderator
Joined
Nov 2005
From
New York City
Posts
10,616
Thanks
9
Herstein's Famous Problem
There is this one problem in Herstein's book which recieved more comments than anything else.
"Show that is a finite abelian group has ... | 5 | [
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0.07421875,
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0.0615234375... | 28,356 | 28356 | |
Rational Exponents
August 9th 2013, 05:24 PM #1
Member
Joined
Jan 2013
From
Australia
Posts
154
Thanks
3
Rational Exponents
1) Simplify:
I know I can split it up like below, but I'm finding it hard to remember where to go next.
It's obvious that both 9 and 15 are factors of 45, but, in ... | 4 | [
0.002685546875,
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-0.10644531... | 28,357 | 28357 | |
Work done in an adiabatic process
Amith2006
Do u mean that between 2 isothermals, u can have only one adiabatic?
Between two states there is only one reversible adiabatic path. Using the adiabatic condition:
[tex]PV^{\gamma} = K \text{and} PdV = - dU = -nC_vdT[/tex],
the work done in this process is:
[tex]W = \i... | 4 | [
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Oscillation in Pest Population and Its Management: A Mathematical Study
International Journal of Mathematics and Mathematical Sciences
Volume 2013 (2013), Article ID 653080, 12 pages
http://dx.doi.org/10.1155/2013/653080
Research Article
Oscillation in Pest Population and Its Management: A Mathematical Study
Departm... | 4 | [
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Cost-Sensitive Feature Selection of Numeric Data with Measurement Errors
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 754698, 13 pages
http://dx.doi.org/10.1155/2013/754698
Research Article
Cost-Sensitive Feature Selection of Numeric Data with Measurement Errors
Laboratory of Granular Computing, Zha... | 4 | [
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0.04785156... | 28,360 | 28360 | |
SensorEvent
The length and contents of the values array depends on which sensor type is being monitored (see also SensorEvent for a definition of the coordinate system used).
All values are in SI units (m/s^2)
• values[0]: Acceleration minus Gx on the x-axis
• values[1]: Acceleration minus Gy on the y-axis
• va... | 4 | [
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0.0732... | 28,361 | 28361 | |
Need help with exponents
I dont remember how to do this problem and being summer, I dont have my textbook to help. Solve: 4^(x+2)=9^(x-1)
I still cant figure it out, sorry. All of the other problems I have to do have the same base or can be simplified to have the same base.
Whatever base you choose, the rules are the... | 5 | [
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0.0590820... | 28,362 | 28362 | |
Right angle triangle - logarithm problem
February 17th 2013, 09:10 PM #1
Newbie
Joined
Feb 2013
From
India
Posts
17
Right angle triangle - logarithm problem
Prove that if a and b are the lengths of the legs and c is the length of hypotenuse of a right angle triangle, c-b not equal to 1; c+b not equal... | 5 | [
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Solving a quadratic equation by completing the square
December 1st 2012, 02:04 PM
tac
Solving a quadratic equation by completing the square
Once the middle term is not an even number I get very confused.
This is what I have so far:
x^2 + 5x + 5 = 0
x^2 + 5x + (5/2)^2 = -5 = (5/2)^2
(x + 5/2)^... | 4 | [
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0.0556640625,
0.005218505859375,
-0.036621... | 28,364 | 28364 | |
Optimizing Inventory and Pricing Policy for Seasonal Deteriorating Products with Preservation Technology Investment
Journal of Industrial Engineering
Volume 2013 (2013), Article ID 793568, 7 pages
http://dx.doi.org/10.1155/2013/793568
Research Article
Optimizing Inventory and Pricing Policy for Seasonal Deteriorating... | 5 | [
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0.... | 28,365 | 28365 | |
How Many Minutes?
April 12th 2009, 06:15 AM #1
MHF Contributor
Joined
Jul 2008
From
NYC
Posts
1,489
How Many Minutes?
Skipper can mow his lawn in 20 minutes less times with the power mower than with his hand mower. One day the power mower broke down 15 minutes after he started mowing, and he took 25 ... | 4 | [
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0.078125,
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-0.06738... | 28,366 | 28366 | |
Group Isomorphism
August 13th 2007, 10:55 PM #1
Junior Member
Joined
Jul 2007
Posts
27
Group Isomorphism
It is very urgent!!!! need help!!!!
Let G be any group and let g be an element of G. Define the function f:G-->G by f(a) = g^(-1)*a*g (a is in G)(thus f takes every element to its conjuate by g).... | 4 | [
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0... | 28,367 | 28367 | |
Help Solving Problem
June 7th 2008, 09:34 AM #1
Member
Joined
May 2008
Posts
143
Help Solving Problem
Can some one work this out with me I am not sure what the proper steps are. The expression is $\frac{10}{3}*\frac{2x}{15}$
The correct answer is $\frac{4x}{9}$
thanks
$\frac{10}3\cdot\frac... | 4 | [
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0.0441894... | 28,368 | 28368 | |
Probability assignment (Assignment 2), Psych. 153, Fall 2010
This assignment is very simple. It is designed to get you go look at the data from Assignment 1 and think about them a little.
The items were:
┌───────┬──────────────────────────────────────────────────────┐
│love │prefer love stories to action/adventur... | 5 | [
0.044189453125,
0.0703125,
0.0830078125,
0.0108642578125,
0.04150390625,
0.02197265625,
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-0.0476... | 28,369 | 28369 | |
Fekete-Szegö Problems for Quasi-Subordination Classes
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 192956, 14 pages
http://dx.doi.org/10.1155/2012/192956
Research Article
Fekete-Szegö Problems for Quasi-Subordination Classes
School of Mathematical Sciences, Faculty of Science and Technology, Universi... | 5 | [
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-0.15234375,
0.031982421875,
-0.075195... | 28,370 | 28370 | |
On Some Recent Developments in Ulam's Type Stability
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 716936, 41 pages
http://dx.doi.org/10.1155/2012/716936
Review Article
On Some Recent Developments in Ulam's Type Stability
^1Département d'Informatique et de Mathématiques, Ecole Centrale de Nantes, 1 Ru... | 5 | [
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0.059326171875... | 28,371 | 28371 | |
Cosets
November 6th 2010, 01:50 PM
matt.qmar
Cosets
Hello,
I am trying to prove, or disprove by means of a counterexample the two statements.
For a subgroup H of a group G, with elements a,b $\in$ G, and aH is the coset of H containing a, defined as $aH = \{ah\ : h \in H\}$
(1)
$aH=bH$ implies... | 4 | [
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0.041748046875,
0.059326171875,
-0.0341796... | 28,372 | 28372 | |
Concave up and Concave down
March 28th 2009, 01:05 PM #1
Junior Member
Joined
Jan 2009
Posts
45
Concave up and Concave down
Hey
I don't understand how to determine the domain of concave up versus concave down when the graph has two points of inflection.
For example
x^4 + 8x^3 + 18x^2 + 8
... | 4 | [
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0.1328125,
0.0296630859375,
0.038818359375,
0.068359375,
0.0390625,
-0.133789062... | 28,373 | 28373 | |
the encyclopedic entry of harmonic motion
Simple harmonic motion is the motion of a simple harmonic oscillator, a motion that is neither driven nor damped. The motion is periodic, as it repeats itself at standard intervals in a specific
manner - described as being sinusoidal, with constant amplitude. It is characterize... | 4 | [
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0.0301513671875,
0.0250244... | 28,374 | 28374 | |
geometric progression
December 1st 2010, 10:11 AM
killykilly
geometric progression
Hi ! I'm trying to brush up on my algebra for an exam next week. I stumbled on this one.
"A rich man called his seven sons. He had with him a number of pebbles, each pebble representing a gold bar. To his first son, he gave h... | 4 | [
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0.006134033203125,
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... | 28,375 | 28375 | |
An Impulsive Periodic Single-Species Logistic System with Diffusion
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 101238, 9 pages
http://dx.doi.org/10.1155/2013/101238
Research Article
An Impulsive Periodic Single-Species Logistic System with Diffusion
^1School of Computer Science and Engineering, Un... | 5 | [
-0.06494140625,
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0.0191650390625,
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0.0220947265625,
0.042724609375,
0.044189453125,
0.0625,
-0.0625,
0.064453125,
0.0284423828125,
0.0196533203125,
0.00142669677734375,
-0.08447265625,
-0.09619140625... | 28,376 | 28376 | |
the encyclopedic entry of are smooth
In
mathematical analysis
, a
differentiability class
is a classification of
functions
according to the properties of their
derivatives
. Higher order differentiability classes correspond to the existence of more derivatives. Functions that have derivatives of all orders are ... | 4 | [
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-0.0576171875,
-0.01354980... | 28,377 | 28377 | |
Great Pyramid question...need help!!!!!
June 1st 2008, 08:09 PM #1
Newbie
Joined
Jun 2008
Posts
1
this is high school calculus
and i have no idea how to do this
question:
It is reported that the Great Pyramid of Egypt was built in 20 years.
A side of its square has measures 755 feet, and ... | 5 | [
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-0.04345703125,
0.010... | 28,378 | 28378 | |
Torsion free and divisible Z-modules
September 28th 2009, 02:21 AM #1
Member
Joined
Oct 2008
Posts
130
Torsion free and divisible Z-modules
If A is a torsion free Z module (abelian group) and D is a divisble Z module, then Hom(A,D) is divisible.
I'm also wondering if it is necessary to assume that A... | 4 | [
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0.1142578125,
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0.07373046875... | 28,379 | 28379 | |
RSAParameters Structure
Represents the standard parameters for the RSA algorithm.
Namespace: System.Security.Cryptography Assembly: mscorlib
(in mscorlib.dll)
The RSAParameters type exposes the following members.
Name Description
Equals Indicates whether t... | 4 | [
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0.0284423828125,
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0... | 28,380 | 28380 | |
Information Propagation in Online Social Network Based on Human Dynamics
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 953406, 6 pages
http://dx.doi.org/10.1155/2013/953406
Research Article
Information Propagation in Online Social Network Based on Human Dynamics
^1School of Economics and Management, B... | 4 | [
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0.06640625,
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0.0038909912109375,
-0.04345703125,
0.005035400390625,
-0... | 28,381 | 28381 | |
Predictive Shear Strength Models for Tropical Lateritic Soils
Journal of Engineering
Volume 2013 (2013), Article ID 595626, 8 pages
http://dx.doi.org/10.1155/2013/595626
Research Article
Predictive Shear Strength Models for Tropical Lateritic Soils
Department of Civil Engineering, Federal University of Technology, A... | 4 | [
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0.0400390625,
-0... | 28,382 | 28382 | |
Synchronous Current Compensator for a Self-Balanced Three-Level Neutral Point Clamped Inverter
Advances in Power Electronics
Volume 2014 (2014), Article ID 620607, 8 pages
http://dx.doi.org/10.1155/2014/620607
Research Article
Synchronous Current Compensator for a Self-Balanced Three-Level Neutral Point Clamped Inver... | 4 | [
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On the Largest Disc Mapped by Sum of Convex and Starlike Functions
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 682413, 12 pages
http://dx.doi.org/10.1155/2013/682413
Research Article
On the Largest Disc Mapped by Sum of Convex and Starlike Functions
^1School of Mathematical Sciences, Universiti Sain... | 5 | [
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Economics Interactive Tutorial
Please go to sambaker.com for the latest version of this tutorial. If you got the link to this page from someone, please tell him or her about the change. I'm retiring!
Economics Interactive Tutorial (Instructions)
Use Safari (Mac) or Internet Explorer (PC) if you want to print this page... | 5 | [
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Semi-simple Banach Algebras
November 29th 2009, 02:14 AM #1
Junior Member
Joined
Oct 2009
Posts
70
Semi-simple Banach Algebras
Dear Friends!
I've a little problem with this issue. How Can I show that any self-adjoint subalgebra A of n × n matrices with complex entries is semisimple. I must explain th... | 5 | [
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Newton's Law of Cooling
February 11th 2009, 05:22 PM #1
Junior Member
Joined
Aug 2008
From
New York City
Posts
35
Newton's Law of Cooling
A metal plate that has been heated cools from 180 F to 150 F in 20 minutes when surrounded by an air temperature of 60 F. Use Newton's Law of cooling to approximat... | 4 | [
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integrate [E^(2x)](Cos[2x])
guess $<br /> e^{2x} \cos(2x)= \mbox{Re}\ (e^{2x} e^{2x \mathrm{i}})=\mbox{Re}\ (e^{2x(1+\mathrm{i})})<br />$ Hence: $<br /> \int e^{2x} \cos(2x) dx= \int \mbox{Re}\ (e^{2x(1+\mathrm{i})})dx=\mbox
{Re}\ \left(\int e^{2x(1+\mathrm{i})}dx \right)<br />$ $<br /> \int e^{2x} \cos(2x) dx= \mbox{R... | 5 | [
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Question on conditional probability
January 14th 2013, 11:49 AM #1
Newbie
Joined
Jan 2013
From
California
Posts
2
Question on conditional probability
I'm a bit stumped on this question. It seems simple but I don't know where to begin.
"There is a 50% chance of hard drive damage if a power line t... | 4 | [
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the encyclopedic entry of d. hilbert
The
wave equation
is an important second-order linear
partial differential equation
that describes the propagation of a variety of
waves
, such as
sound
waves,
light
waves and
water
waves. It arises in fields such as
acoustics
,
electromagnetics
, and
fluid dynamics... | 4 | [
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Prime Numbers
September 20th 2010, 08:52 AM
page929
Prime Numbers
Here is my problem:
Let a,b be nonzero integers. Prove that (a,b) = 1 if and only if (a+b, ab) = 1.
Any suggestion on where to start?
September 20th 2010, 09:42 AM
roninpro
You could try playing around with Bezout's identity.
... | 5 | [
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help antiderive these Riemann integrals
Show manual steps to evaluate these integrals:
1. antiderive: 1-x/x^2-2x dx u=X^2-2x
2. antiderive(1 at bottom 9 on top): 2/(sqroot X)(1+sqrootx) dx u=1+sqrootX
3. antiderive(1 at bottom, 5 is upper number): 2x-1/x+2 dx u=x+2
| 5 | [
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pythagorean triples
Show that the products of the lengths of the three sides is divisible by 60.
$60=2^2\cdot{3}\cdot{5}$ Suppose $(x, y, z)$ is a pythagorean triple Then $x^2+y^2=z^2$ Note that $x^2\equiv{0;1}(\bmod. 3)$ , $x^2\equiv{0;1}(\bmod. 4)$ and $x^2\equiv{0;1;-1}(\bmod. 5)$ (these are
the options) Suppose no... | 5 | [
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1967 Electronics World
[Table of Contents]
People old and young enjoy waxing nostalgic about and learning some of the history of early electronics. Electronics World was published from May 1959 through December 1971.
As time permits, I will be glad to scan articles for you. All copyrights (if any) are hereby acknowl... | 4 | [
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I keep finding a negative volume for this solid of revolution. Please help?
June 1st 2010, 10:19 AM #1
Newbie
Joined
Apr 2010
Posts
19
I keep finding a negative volume for this solid of revolution. Please help?
Find the volume of the solid of revolution formed by revolving the planar region, $f(x)=x^3$ a... | 5 | [
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Spectral Method with the Tensor-Product Nodal Basis for the Steklov Eigenvalue Problem
Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 650530, 9 pages
http://dx.doi.org/10.1155/2013/650530
Research Article
Spectral Method with the Tensor-Product Nodal Basis for the Steklov Eigenvalue Problem
Scho... | 5 | [
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... | 28,396 | 28396 | |
probabilities- Please more detail that will easy for me to understand
August 2nd 2007, 07:22 AM #1
Newbie
Joined
Jul 2007
Posts
13
probabilities- Please more detail that will easy for me to understand
□ Assume random variable x is from a normal distribution with mean µ = 20 and standard deviation σ = 5... | 5 | [
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Math Help
April 7th 2008, 06:57 PM #1
Newbie
Joined
Apr 2008
Posts
4
dimension
I have a homework problem that I can't figure out...
Is the space of all real valued continuous functions defined on the interval [0,1] finite dimensional?
please help me! thanks.
No. Because the space of all r... | 5 | [
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Existence of Solutions for Generalized Vector Quasi-Equilibrium Problems by Scalarization Method with Applications
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 916089, 8 pages
http://dx.doi.org/10.1155/2013/916089
Research Article
Existence of Solutions for Generalized Vector Quasi-Equilibrium Problem... | 5 | [
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