content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
Dr. Rhett Herman-homework
RU Links
Radford University
Department of Physics
RU Planetarium
RUSMART pages (weather)
Spring 2014 Classes & Info
PHYS 308
PHYS 309
PHYS 450
My daily schedule
My C.V.
Summer jobs/internships
NSF REU Program (list of REU sites)
Other links
The Nucleus (resources for
physics/astronomy undergra... | 4 | [
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valuation ring, discrete valuation
November 18th 2008, 07:47 PM #1
Junior Member
Joined
Nov 2008
Posts
25
valuation ring, discrete valuation
Background: Let $K$ be a field. A discrete valuation on $K$ is a function $u$ on $K$ is a function $u$$: K^* \rightarrow \mathbb{Z}$ such that
(i) $u(ab)=u(a)+u... | 4 | [
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A ring becomes a division ring?
December 17th 2012, 10:36 PM #1
Junior Member
Joined
Nov 2012
From
Taiwan
Posts
41
A ring becomes a division ring?
I got one problem from the textbook:
Prove that a finite ring with more than one element and no zero divisors is a division ring.
It's obvious th... | 5 | [
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0.... | 27,902 | 27902 | |
Arithmetic Sequences
June 14th 2008, 04:41 PM
damaster
Arithmetic Sequences
This is a question I really don't get. I've tried all the things i can think of, and the only clue i have is: Arithmetic Sequences (this is a topic I'm horrible at).
The problem is
Find the sum of all positive integers not grea... | 4 | [
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Turning a circle into a line • /r/math
all 24 comments
[–]Splanky222Applied Math0 points1 point2 points
sorry, this has been archived and can no longer be voted on
What about this way? We'll view the circle as an ellipse with equal length axes, and call it [; E_0 ;] Now squish the circle, so that the semi-minor axis... | 4 | [
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prove part (b) of this integration inequality
September 9th 2010, 12:42 AM #1
Senior Member
Joined
Feb 2008
Posts
410
prove part (b) of this integration inequality
(a) Suppose that $u(t)$ is a continuous solution of
$u(t)\leq f(t)+\int_{t_0}^t h(s)u(s)ds$, $t\geq t_0$,
where $f,h$ are continuou... | 4 | [
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The Transmission Disequilibrium/Heterogeneity Test with Parental-Genotype Reconstruction for Refined Genetic Mapping of Complex Diseases
Journal of Probability and Statistics
Volume 2012 (2012), Article ID 256574, 14 pages
http://dx.doi.org/10.1155/2012/256574
Research Article
The Transmission Disequilibrium/Heteroge... | 4 | [
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X^3 + 2x^3 - 5x - 6 = (x-2)(x+3)(x-k), find k.
January 3rd 2012, 11:22 AM #1
Junior Member
Joined
Dec 2011
Posts
28
X^3 + 2x^3 - 5x - 6 = (x-2)(x+3)(x-k), find k.
X^3 + 2x^3 - 5x - 6 = (x-2)(x+3)(x-k), i have to find the value of k,
can you please help me with starting the question, i am completely... | 4 | [
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Poisson distribution.
July 6th 2011, 01:00 PM
SLJSWW
Poisson distribution.
An insurance company receives on average 3 claims per month from a certain town.Assuming that the number of claims follows a Poisson distribution, find the probability
a) it receives less than 3 claims in a given month;
b) it rece... | 4 | [
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Is there always a parallelogram cross-section of parallelepiped contained in the smallest box
up vote 1 down vote favorite
Let $M$ be a centered parallelepiped, the intersection of $M$ and any plane $P$ that passes through the origin is a parallelogram or hexagon. Each parallelogram or hexagon has a cubic box that is... | 5 | [
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The Generalization of Prime Modules
Algebra
Volume 2013 (2013), Article ID 581023, 4 pages
http://dx.doi.org/10.1155/2013/581023
Research Article
The Generalization of Prime Modules
Department of Mathematical Sciences, Isfahan University of Technology, Isfahan 84156-83111, Iran
Received 29 December 2012; Accepted 1... | 4 | [
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derivative logarithm
November 24th 2012, 08:04 AM
chg
derivative logarithm
Hi guys, I'm stuck :(
can someone please help me understand this:
f(x) = e^(2x) log(x^2)
we are given the answer which should be : f(x)' = ( e^(2x) / ln(10) ) * (ln(x^2) + 1)
this is where I'm stuck (I'm not even sure... | 5 | [
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Trigonometric Identities
April 10th 2012, 06:06 PM #1
Junior Member
Joined
Mar 2012
From
San Francisco
Posts
32
Show that:
sin^2(angle) = [tan^2(angle)]/[1+tan^2(angle)]
fir all (angles) except odd multiples of pi/2.
(This is coming straight from my homework)
-Thank you!
Re: Trig... | 4 | [
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-Derivations in BCI-Algebras
Discrete Dynamics in Nature and Society
Volume 2012 (2012), Article ID 403209, 11 pages
http://dx.doi.org/10.1155/2012/403209
Research Article
On -Derivations in BCI-Algebras
Department of Mathematics, University of Tabuk, P. O. Box 741, Tabuk 71491, Saudi Arabia
Received 15 September 2... | 5 | [
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Nonlocal Problem for Fractional Evolution Equations of Mixed Type with the Measure of Noncompactness
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 784816, 12 pages
http://dx.doi.org/10.1155/2013/784816
Research Article
Nonlocal Problem for Fractional Evolution Equations of Mixed Type with the Measure o... | 5 | [
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Inverse function
Find the inverse of the function: f(t) = (10^t - 10^(-t))/(10^t + 10 ^ (-t)) Thanks, Anshu
$f(t)=y=\dfrac{10^t-\dfrac1{10^t}}{10^t+\dfrac1{10^t}} = \dfrac{10^{2t}-1}{10^{2t}+1}$ Solve the equation for t: $y= \dfrac{10^{2t}-1}{10^{2t}+1}$ Substitute $a = 10^{2t}$ $y= \dfrac{a-1}{a+1}~\
implies~a=\dfrac... | 5 | [
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Integrals: Total Distance
November 29th 2007, 06:48 PM
angel.white
Integrals: Total Distance
he velocity function v(t) (in meters per second) is given for a particle moving along a line.
$v(t)=3t-7, 0\leq t\leq 3$
a) Find the displacement d1 traveled by the particle during the time interval given above... | 5 | [
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integral question
January 5th 2010, 05:27 PM #1
integral question
Hi I am working on a integral involving u substiution and inverse trig forms.
$<br /> Evaluate:~~\int\frac{2}{(2x+3)\sqrt{4x^2+12x+5}}dx =<br />$
$<br /> \int\frac{2}{(2x+3)\sqrt{\frac{x^2+3x+\frac{5}{4}} {\frac{1}{4}}}}dx<br /> =$
C... | 5 | [
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Need algebra to simplify/solve an equation
August 28th 2011, 03:14 PM #1
Newbie
Joined
Aug 2011
Posts
2
Need algebra to simplify/solve an equation
the equation that i need to simplify first is ((x^2-1)^1/2 -(x^2-1)^-1/2 (2-x^2)) / (x^2-1)= 0
after i move the negative power, im not exactly sure what ... | 4 | [
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[SI-LIST] : Placement of series termination
Howard Johnson (howiej@sigcon.com)
Sun, 11 Jan 1998 20:51:35 -0800
I recently became interested in finding a simple expression
for the effectiveness of a series termination, as a function
of placement. We all know that a series termination is=20
supposed to be located "near... | 5 | [
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Help finding an ax+by=c equation's integer solution
June 16th 2011, 12:11 PM #1
Hello All,
I have just begun a course on number theory and proofs, and I need help with the process of solving Diophantine equations. I am not sure how to employ the Euclidean algorithm to solve the
following equation or how t... | 5 | [
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Basic Integration question
December 11th 2012, 09:22 AM #1
Senior Member
Joined
Nov 2012
From
Hawaii
Posts
260
Thanks
2
Basic Integration question
Heres what i got so far....
I got
= u^2(u^3 + 2)^1/2
= (u^5 + 2u^2)^1/2 (DID I DO IT RIGHT?)
Re: Basic Integration question
No - not... | 5 | [
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formula for future value of immediate annuity
September 22nd 2011, 05:12 AM #1
Member
Joined
Sep 2011
From
india
Posts
106
Thanks
2
How to find rate of interest in the formula for future value of immediate annuity, if future value, number of periods and amount of annuity (i-e fixed amount payable ... | 5 | [
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Check if everything is OK in the way I have solved this problem?
February 15th 2013, 07:37 AM
Yoodle15
Check if everything is OK in the way I have solved this problem?
Can you please just look this over like peer review? I think I am fairly confident about my general procedure, but I am scared that I have commit... | 5 | [
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-0.06103515625... | 27,923 | 27923 | |
Spans and vectors
September 9th 2010, 08:56 PM #1
Senior Member
Joined
Feb 2008
Posts
297
Spans and vectors
If a question asks,
Is the vector
$\mathbf{b}=\begin{pmatrix}-2\\ -6\\ -4\end{pmatrix}\in \mbox{span}(\mathbf{v_1, v_2, v_3, v_4})$ where:
$\mathbf{v_1}=\begin{pmatrix}1\\ 3\\ 0\end{... | 4 | [
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0.021240234375,
-0.0810546875,
... | 27,924 | 27924 | |
New Iterative Manner Involving Sunny Nonexpansive Retractions for Pseudocontractive Mappings
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 207896, 9 pages
http://dx.doi.org/10.1155/2012/207896
Research Article
New Iterative Manner Involving Sunny Nonexpansive Retractions for Pseudocontractive Mappings
... | 5 | [
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0... | 27,925 | 27925 | |
A Finite Element Variational Multiscale Method Based on Two Local Gauss Integrations for Stationary Conduction-Convection Problems
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 747391, 14 pages
http://dx.doi.org/10.1155/2012/747391
Research Article
A Finite Element Variational Multiscale Method ... | 5 | [
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-0.030517578... | 27,926 | 27926 | |
Partial Fraction Decomposition
April 17th 2008, 10:06 AM #1
Newbie
Joined
Apr 2008
Posts
2
Partial Fraction Decomposition
Hi,
I'm stuck on a problem that requires partial fraction decomposition:
2 / [(x2 + 1)( x2 + 4)]
I can't figure out what to do about the x-squared form in the denominat... | 5 | [
-0.0206298828125,
0.068359375,
0.054931640625,
0.07666015625,
0.0238037109375,
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-0.019775390625,
0.02783203125,
-0.046630859375,
-0.0341796875,
-0.0986328125,
-0.047607421875,
0.040283203125,
-0.0123291015625,
0.06640625,
0.08740234375,
0.08203125,
-0... | 27,927 | 27927 | |
intervals using 1st derivative test??
August 13th 2008, 08:50 PM #1
Newbie
Joined
Aug 2008
Posts
5
intervals using 1st derivative test??
Find the intervals of inc and dec & local max and min of h(x)=x^3/2-256x? using 1st derivative test.?
thanks...this one is really getting me!!!
sorry
i gues... | 4 | [
0.041259765625,
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0.01513671875,
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0.058837890625,
0.003143310546875,
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0.03857421875,
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0.0986328125,
-0.038818359375,
0.00830078125,
-0.05224609375,
-0.042724609375,
-0.0... | 27,928 | 27928 | |
Design and Implementation of a Hardware Module for MIMO Decoding in a 4G Wireless Receiver
VLSI Design
Volume 2008 (2008), Article ID 312614, 8 pages
http://dx.doi.org/10.1155/2008/312614
Research Article
Design and Implementation of a Hardware Module for MIMO Decoding in a 4G Wireless Receiver
^1Departamento de Señ... | 4 | [
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0.06884765625,
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-0.034912109375,
0.0306396484375,
0.0076293945... | 27,929 | 27929 | |
Prime/Maximal Ideals
April 7th 2011, 03:54 PM #1
Junior Member
Joined
Nov 2010
Posts
37
Prime/Maximal Ideals
I'm working on prime an maximal ideals. My partner and I are studying for our final exam and got conflicting answers.
The question was to find all of the prime and maximal ideals of $\mathbb ... | 5 | [
-0.016845703125,
-0.031494140625,
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-0.0576171875,
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-0.001617431640625,
-0.00... | 27,930 | 27930 | |
Show that sys. of eq. has no integer solutions
August 6th 2012, 01:41 AM #1
Junior Member
Joined
Jul 2012
From
Earth
Posts
56
Show that sys. of eq. has no integer solutions
I'm to show that the system of equations below has no integer solutions.
$\begin{cases} 11x - 5y = 7 \: & (\text {I})\\9x +... | 4 | [
-0.091796875,
-0.002593994140625,
0.04296875,
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0.0213623046875,
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0.0004367828369140625,
-0.0390625,
0.04248046875,
0.06884765625,
0.0079345703125,
-0.04736328125,
-0.0281982421875,
-0.058837890625,... | 27,931 | 27931 | |
Algebra help
June 15th 2009, 02:14 PM
greghunter
Algebra help
Solve the equation:
$\frac {7}{(x-4)(x+3)} - \frac {4}{(x+3)(x-1)} = \frac {-3}{2}$
The answers are 2,3 but I can't work out a method.
Could really do with some help.
Thanks
June 15th 2009, 02:25 PM
yeongil
Quote:
Multip... | 4 | [
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-0.0016021728515625,
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0.0439453125,
-0.12451171875,
0.0537109375,
-0.02099609375,
-0.0291748046875,
0.056884765625,
-0.03759765625... | 27,932 | 27932 | |
Evaluating Limits
January 16th 2011, 06:04 AM #1
Junior Member
Joined
Jan 2008
Posts
50
Evaluating Limits
Evaluate the following limits:
a).
I cant seem to figure out how to evaluate this and what the answer is, I thought it would be infinite or does not exist but thats not correct. Any help?
... | 4 | [
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0.068359375,
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0.09619140625,
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-0.091796875,
0.0390625,
-0.037353515625,
0.004791259765625,
-0.08203125,
0.0303955078125,
0.09716796875,
0.0380859375,
0.0517578125,
-0.033203125,
-0.0164794921875,
-0.0... | 27,933 | 27933 | |
Euler's Formula
Euler's Formula, Proof 9: Spherical Angles
The proof by sums of angles works more cleanly in terms of spherical triangulations, largely because in this formulation there is no distinguished "outside face" to cause complications in the proof.
We need the following basic fact from spherical trigonome... | 4 | [
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0.0218505859375,
0.00732421875,
... | 27,934 | 27934 | |
Algebra question where the "x" appears twice
June 5th 2011, 08:58 PM #1
Junior Member
Joined
Aug 2008
Posts
26
Algebra question where the "x" appears twice
Not sure what this kind of question is called, but here it is:
x10 + (1-x)11 = 10.8
find x.
---
I know x = 0.2 but the only way I... | 4 | [
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0.0869140625,
0.055908203125,
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0.0181884765625,
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0.0703125,
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0.0022430419921875,
... | 27,935 | 27935 | |
Traveling Wave Solutions of Some Coupled Nonlinear Evolution Equations
ISRN Mathematical Physics
Volume 2013 (2013), Article ID 685736, 8 pages
http://dx.doi.org/10.1155/2013/685736
Research Article
Traveling Wave Solutions of Some Coupled Nonlinear Evolution Equations
^1Department of Mathematics, Pabna University o... | 5 | [
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0.05078125,
-0.083984375,
-0.07080078125... | 27,936 | 27936 | |
February 20
Fig 1. FFT transformed time series (EBAY) reconstructed with first three and twenty harmonics, respectively.
I see quite a few traders interested in advanced signal processing techniques. It is often instructive to see why they may or may not be useful. The concept behind fourier analysis is that any
p... | 4 | [
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-0.0986328125,
0.01239013671875,
0.00714111328125,
-0.1416015625,
-0.040283203125... | 27,937 | 27937 | |
Hovey's unit axiom in monoidal model categories
up vote 8 down vote favorite
2
Let $\mathcal{C}$ be a monoidal model category in the sense of Hovey's book. He assumes the following unit axiom not considered in other references (e.g. Schwede-Shipley): given a cofibrant
replacement of the monoidal unit $q\colon QI\stack... | 4 | [
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0.087890625,
0.031982421875,
0.07763671875,
0.03540... | 27,938 | 27938 | |
Determining slope and y-intercept.
September 19th 2009, 11:00 AM #1
Member
Joined
Sep 2009
Posts
80
Determining slope and y-intercept.
So, the equation that I'm given is this:
7y + 12x -2 = 0
and I'm told to determine the y-intercept and the slope of this line, but I'm not entirely sure how to ... | 4 | [
-0.060546875,
-0.01519775390625,
-0.020751953125,
0.049072265625,
0.01904296875,
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0.0159912109375,
-0.05517578125,
0.0625,
0.023681640625,
-0.048095703125,
-0.00162506103515625,
0.035400390625,
0.00110626220703125,
0.08251953125,
-0.10205078125,
0.0061... | 27,939 | 27939 | |
Probabilistic dominated convergence theorem
December 13th 2009, 04:48 AM #1
Senior Member
Joined
Jan 2009
Posts
404
Probabilistic dominated convergence theorem
Dominated convergence theorem: Suppose Xn->X almost surely and |Xn| ≤ W for all n, where E(W)<∞. Then E(Xn)->E(X).
1) Suppose Xn->X in proba... | 5 | [
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-0.0181884765625,
0.0625,
0.013671875,
0.04345703125,
0.04150390625,
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0.06884765625,
-0.0089111328125,
-0.06103515625,
0.048095703125,
0.0810546875,
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-0.091796875,
0.020751953125,
0.02734375,
-0.1025390625,
-0.05004882... | 27,940 | 27940 | |
Complex Variables
April 25th 2009, 12:56 PM #1
Complex Variables
Let $f : D \rightarrow \mathbb C$ be holomorphic, let $z_0 \in D$ and let $r > 0$ be such that the disk $|w-z_0| \leq r \in D$ then $f'(z) = \frac{i}{\pi r} \oint\limits_0^{\pi} Im\left(f(z+re^{i
\theta})e^{-i\theta}\right)d\theta$.
I starte... | 5 | [
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0.076171875,
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0.0211181640625,
0.03564453125,
0.02294921875,
-0.0732421875,
-0.03271484375,
-0.076171875,
-0.06787109375,
-0.0... | 27,941 | 27941 | |
Simplify boolean expression.
February 27th 2011, 10:30 PM #1
Newbie
Joined
Feb 2011
Posts
9
i'm having difficulty solving these few problems
1. solve (BC ' + A ' D) ( A B ' + C D ')
2. Simplify the Boolean expression
A C ' + B ' D + A ' C D + A B C D
i got to the first part or what i t... | 5 | [
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0.06787109375,
0.07470703125,
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0.051025390625,
-0.07470703125,
0.08056640625... | 27,942 | 27942 | |
Stability and Bifurcation Analysis of a Delayed Leslie-Gower Predator-Prey System with Nonmonotonic Functional Response
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 152459, 19 pages
http://dx.doi.org/10.1155/2013/152459
Research Article
Stability and Bifurcation Analysis of a Delayed Leslie-Gower Pred... | 5 | [
0.01470947265625,
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0.0050048828125,
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0.06494140625,
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0.057861328125,
0.01904296875,
-0.0... | 27,943 | 27943 | |
Matrix is invertible - proof. Tikhonov regularization and least squares problem.
April 7th 2013, 10:15 PM #1
Newbie
Joined
Apr 2013
From
Poland
Posts
1
Matrix is invertible - proof. Tikhonov regularization and least squares problem.
Hello,
I have a big problem with proofing, that :
$A^TA+\la... | 4 | [
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0.049560546875,
0.0517578125... | 27,944 | 27944 | |
[Finite Maths] Derivative Problems
November 29th 2009, 12:45 AM #1
Newbie
Joined
Nov 2009
Posts
6
[Finite Maths] Derivative Problems
Hey guys. I'm a newbie here and if this thread is in the wrong place please forgive me. I didn't know where to post derivative questions, so I figured this place would be t... | 5 | [
-0.059326171875,
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0.0216064453125,
0.00311279296875,
-0.053466796875,
0.00793... | 27,945 | 27945 | |
Robust Optimal Sliding-Mode Tracking Control for a Class of Uncertain Nonlinear MIMO Systems
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 863168, 9 pages
http://dx.doi.org/10.1155/2013/863168
Research Article
Robust Optimal Sliding-Mode Tracking Control for a Class of Uncertain Nonlinear MIMO Systems... | 4 | [
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0.1328125,
0.009521484375,
0.... | 27,946 | 27946 | |
math homework that i just can't solve.
May 3rd 2010, 07:28 PM #1
Newbie
Joined
May 2010
Posts
2
math homework that i just can't solve.
Yes so i have some math assighments i need to solve and i am almost done (yes it is for a grade) but i just have problems with it. I need answers for these 2 problems:
... | 5 | [
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-0.048095703125,
... | 27,947 | 27947 | |
Pullback Attractors for Nonautonomous 2D-Navier-Stokes Models with Variable Delays
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 425031, 10 pages
http://dx.doi.org/10.1155/2013/425031
Research Article
Pullback Attractors for Nonautonomous 2D-Navier-Stokes Models with Variable Delays
School of Mathemat... | 4 | [
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-0.030029296875,
0.0137939453125,
-0.057861328125,
-0.049072... | 27,948 | 27948 | |
Let Continuous Outcome Variables Remain Continuous
Computational and Mathematical Methods in Medicine
Volume 2012 (2012), Article ID 639124, 13 pages
http://dx.doi.org/10.1155/2012/639124
Research Article
Let Continuous Outcome Variables Remain Continuous
^1Department of Statistics and Computer, University of Social... | 4 | [
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0.015625,
-0.062255... | 27,949 | 27949 | |
Summation of complex numbers
November 1st 2009, 07:37 PM #1
Summation of complex numbers
Given that $w_n=3^{-n}cos2n\theta$ for $n=1,2,3$... use De Moivre's Theorem to show that
$1+w_1+w_2+w_3+...+w_{N-1}=\frac{9-3cos2\theta+3^{-N+1}cos2(N-1)\theta-3^{N+2}cos2N\theta}{10-6cos2\theta}$
I am really hopele... | 4 | [
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-0.03662109375,
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-0.039306640625,
-0.032958984375,
-0.... | 27,950 | 27950 | |
simple question
September 16th 2013, 11:06 AM
Matt512
simple question
The scale of a map is 1:25 000
The distance between two villages is 10cm on the map.
Find the actual distance, in kilometres , between the villages.
September 16th 2013, 05:17 PM
chiro
Re: simple question
Hey Matt512.
Hint... | 4 | [
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0.125,
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0.0213623046875,
0.04736328125,
-0.057861328125,
-0.00164031982421875,
0.017333984375,
0.... | 27,951 | 27951 | |
Help with radians, arcs and areas please?
January 31st 2013, 12:48 PM #1
Newbie
Joined
Jan 2013
From
uk
Posts
15
Help with radians, arcs and areas please?
A badge is made of a circle centre O, with radius 5cm and a chord AB of length 6cm creating a blue minor segment at the bottom. Give all your answ... | 4 | [
0.0031585693359375,
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0.02880859375,
-0.0576171875,
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0.035888671875,
0.001922607421875,
-0.00148773193359375,
0.0341796875,
-0.038818359375,
0.0137939453125,
0.03662109375,
0.005767822265625,
0.07470703125,
-0.0419921875,
-0.... | 27,952 | 27952 | |
Nid help please
August 26th 2006, 05:32 PM
^_^Engineer_Adam^_^
Nid help please
Prove the identities:
1.) cot (A + B) = (cotAcotB - 1) / (cotB + cotA)
2.) cot (A - B) = (cotAcotB + 1) / (cotB - cotA)
3.) sec (A + B) = (secAsecB) / (1 - tanAtanB)
4.) csc (A + B) = (cscAcscB) / (cotB + cotA)
August... | 4 | [
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0.026123046875,
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0.01123046875,
-0.06103515625,
0.0634765625... | 27,953 | 27953 | |
Positive semidefinite matrices
May 4th 2010, 04:40 PM
math8
Positive semidefinite matrices
Let P and Q be Hermitian positive definite matrices. We prove that for all $x \in \textbf{C}^{n}$ ,
$x^{*}Px \leq x^{*}Qx$ if and only if $x^{*}Q^{-1}x \leq x^{*}P^{-1}x$.
I suppose we need to show that $(Q-P)$ is... | 4 | [
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If the Area of a Triangle ABC is given by the formula
Author Message
TAGS:
If the Area of a Triangle ABC is given by the formula [#permalink] 14 Oct 2012, 20:45
... | 4 | [
0.0625,
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Dynamic Vehicle Routing Using an Improved Variable Neighborhood Search Algorithm
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 672078, 12 pages
http://dx.doi.org/10.1155/2013/672078
Research Article
Dynamic Vehicle Routing Using an Improved Variable Neighborhood Search Algorithm
^1Branch of Quality M... | 4 | [
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Assistance sought on how to go about solving graphing problem.
January 10th 2013, 01:54 PM #1
Junior Member
Joined
Nov 2012
From
Michigan
Posts
27
Thanks
1
Assistance sought on how to go about solving graphing problem.
The text asks: Find the possible slopes of a line that passes through (4,3) so... | 4 | [
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orthonormal basis
April 6th 2010, 02:26 PM #1
Member
Joined
Feb 2010
Posts
133
orthonormal basis
Hey,
I would like to show that the sequence $\{ \delta_{k} \}_{k=1}^{\infty}=(0,0,0,\ldots,1,0,0,\ldots)$ (the k'th entry is 1) is an orthonormal basis for the space
$l^{2}(\mathbb{N})=\Big\{\{x_{k}... | 5 | [
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Quantification of Scenario Distance within Generic WINNER Channel Model
International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 176704, 17 pages
http://dx.doi.org/10.1155/2013/176704
Research Article
Quantification of Scenario Distance within Generic WINNER Channel Model
^1Department for Pow... | 4 | [
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A Class of Fuzzy Variational Inequality Based on Monotonicity of Fuzzy Mappings
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 854751, 17 pages
http://dx.doi.org/10.1155/2013/854751
Research Article
A Class of Fuzzy Variational Inequality Based on Monotonicity of Fuzzy Mappings
^1College of Mathematics... | 5 | [
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-Stability of Linear Matrix Differential Systems
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 781983, 6 pages
http://dx.doi.org/10.1155/2013/781983
Research Article
-Stability of Linear Matrix Differential Systems
^1College of Electronic and Information Engineering, Hebei University, Baoding, Hebei 0... | 5 | [
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equilateral triangle inscribed in a circle..
February 28th 2010, 07:02 AM
snigdha
equilateral triangle inscribed in a circle..
In the given fig., ABC is an equilateral triangle inscribed in a circle of radius 4 cm. Find the area of the shaded region.
February 28th 2010, 11:16 AM
masters
Quote:
Hi sn... | 4 | [
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natural log differentiating problem, thanks
February 28th 2013, 06:06 AM
dokrbb
differentiating (ln u)^(f) in x = a
I have to evaluate d/dx of (ln (5 – x^(2)))^(1/4) at x = 1
So, differentiating it I proceeded by y= (ln (5 – x^(2)))^(1/4) = ¼ (ln (5 – x^(2)))^(3-/4) * 1/(5 – x^(2)) * (-2x) = ¼ (ln (5 – x^(2... | 5 | [
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Flight of an Aeroplane problem
May 30th 2009, 08:38 AM #1
Newbie
Joined
Apr 2009
Posts
13
Flight of an Aeroplane problem
Hi, I would be really grateful to anyone who can help me with this problem...
An aeroplane flies at a constant speed of 800km per hour in a straight line from (-100, -200) to (300... | 4 | [
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A Derivation of the Main Relations of Nonequilibrium Thermodynamics
ISRN Thermodynamics
Volume 2013 (2013), Article ID 906136, 9 pages
http://dx.doi.org/10.1155/2013/906136
Research Article
A Derivation of the Main Relations of Nonequilibrium Thermodynamics
Moscow State University of Economics, Statistics and Inform... | 4 | [
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the encyclopedic entry of refractive index
The
refractive index
(or
index of refraction
) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. For example, typical
glass
has a refractive index of 1.5, which means that in glass, light travels a... | 4 | [
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Combination problem - overlapping sets and hypergeometric distribution
December 30th 2012, 09:14 AM #1
Newbie
Joined
Dec 2012
From
somewhere
Posts
4
Combination problem - overlapping sets and hypergeometric distribution
ok, so i have 3 sets, each with 4 elements. These 3 sets are subsets of the unive... | 5 | [
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Slope-intercept
March 28th 2012, 06:27 PM #1
Junior Member
Joined
Mar 2012
From
United States
Posts
43
Slope-intercept
Problem states -
Find the slope-intercept form of the equation of the line perpendicular to 4x+5y= -11, and containing the point (-7,6):
I came up with y= - 4/5x + 2/5
... | 4 | [
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MHD Boundary Layer Flow due to Exponential Stretching Surface with Radiation and Chemical Reaction
Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 163614, 7 pages
http://dx.doi.org/10.1155/2013/163614
Research Article
MHD Boundary Layer Flow due to Exponential Stretching Surface with Radiation and... | 4 | [
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A true or false about an inner product
March 2nd 2009, 09:11 AM #1
A true or false about an inner product
Hi MHF,
I did badly (failed) in the final exam on linear algebra (4.4/10) and so I must retake the exam in late June or early July. I'm still stuck on some exam questions :
Tell whether this is true o... | 5 | [
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-Electric Potential due to Continuous Charge Distributions
Download Policy: Content on the Website is provided to you AS IS for your information and personal use only and may not be sold or licensed nor shared on other sites. SlideServe reserves the right to
change this policy at anytime. While downloading, If for som... | 5 | [
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Differentiation using limits
January 28th 2010, 09:35 PM #1
Newbie
Joined
Jan 2010
Posts
7
Differentiation using limits
HI there guys, I'm taking calculus for the third time and its been a long time since i can remember my basic algebra and such. So please I ask for patience for this simple work, I under... | 5 | [
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Comparison of Artificial Neural Network Architecture in Solving Ordinary Differential Equations
Advances in Artificial Neural Systems
Volume 2013 (2013), Article ID 181895, 12 pages
http://dx.doi.org/10.1155/2013/181895
Research Article
Comparison of Artificial Neural Network Architecture in Solving Ordinary Differen... | 5 | [
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True-Randomness and Pseudo-Randomness in Ring Oscillator-Based True Random Number Generators
International Journal of Reconfigurable Computing
Volume 2010 (2010), Article ID 879281, 13 pages
http://dx.doi.org/10.1155/2010/879281
Research Article
True-Randomness and Pseudo-Randomness in Ring Oscillator-Based True Rand... | 4 | [
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Development of a New Research Platform for Electrical Drive System Modelling for Real-Time Digital Simulation Applications
Advances in Power Electronics
Volume 2013 (2013), Article ID 719847, 10 pages
http://dx.doi.org/10.1155/2013/719847
Research Article
Development of a New Research Platform for Electrical Drive Sy... | 4 | [
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Velocity (application)
We discuss problems, which highlight certain aspects of the study leading to the concept of velocity. For this reason, questions are categorized in terms of the characterizing features of the subject
matter :
• Position vector
• Displacement
• Constrained motion
• Nature of velocity
• ... | 5 | [
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Probability of an event
February 22nd 2008, 02:33 PM
mathlete2
Probability of an event
Suppose that two balanced dice are tossed repeatedly and the sum of the two uppermost faces is determined on each toss. What is the probability that we obtain
a) a sum of 3 before we obtain a sum of 7?
b) a sum of 4 be... | 5 | [
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mapping homomorphism and subgroup
January 27th 2009, 07:55 AM
knguyen2005
mapping homomorphism and subgroup
1) Describe explicitly all homomorphisms h: C_6 maps to Aut(C_12)
Firstly, I have to find what group Aut(C_12) is isomorphic to, and then find the order of that group. Is this the right track?
If... | 5 | [
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[SOLVED] simplify Algebra Problem with exponents
November 1st 2007, 04:40 AM #1
gnom
Guest
[SOLVED] simplify Algebra Problem with exponents
how do you solve for R, rate in this equation
please provide a "check" that shows how to solve the problem
Formula
I = G/(1+r) + G/(1+r)^2 + G/(1+r)^3
Given
... | 5 | [
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0.05200195... | 27,979 | 27979 | |
Average Value
May 27th 2009, 09:45 AM #1
Member
Joined
Oct 2008
Posts
96
Average Value
If the average value of f on the interval 2 < or = x < = 5 is 4, Find integral form 2 to 5 of (3(f(x) + 2)dx
The "average" value of a function, f, on the interval $a\le x\le b$ is $\frac{\int_a^b f(x)dx}{b-a}$ so ... | 4 | [
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Help with a few basic derivatives...
October 23rd 2009, 02:41 AM #1
Newbie
Joined
Oct 2009
Posts
9
Help with a few basic derivatives...
1. y = (x^2 + 1)^3 * (x^3 - 1)^2
2. y = (x^3 + 1) / (x^3 - 2)
3. y = x^2 * sqrt(x + 1)
4. find dy/dx and d^2y/dx^2 for x^(1/3) + y^(1/3) = 3 at the point ... | 5 | [
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Compatible and Incompatible Nonuniqueness Conditions for the Classical Cauchy Problem
Abstract and Applied Analysis
Volume 2011 (2011), Article ID 743815, 15 pages
http://dx.doi.org/10.1155/2011/743815
Research Article
Compatible and Incompatible Nonuniqueness Conditions for the Classical Cauchy Problem
^1Department... | 5 | [
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Generalization of the Chinese Remainder Theorem
October 21st 2007, 10:02 AM #1
Newbie
Joined
Oct 2007
Posts
2
Generalization of the Chinese Remainder Theorem
Prove the following generalisation of the Chinese Remainder Theorem. Show
that if
m1;m2;m3 are pairwise coprime integers and a1 inZ/m1, a2... | 4 | [
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0.00506591796875,
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0.11328125,
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0.0927734375,
-0.04052734375,
-0.0029296875,
0.059814453125,
-0.00665283203125,
0.0111694... | 27,983 | 27983 | |
Is there a way to show my work for this limit?
April 3rd 2010, 07:16 PM #1
Super Member
Joined
Nov 2008
Posts
597
Is there a way to show my work for this limit?
Is there a way to show my work for this? (other than knowing that both will grow infinitely and by pluggin in numbers to see which one grows fas... | 5 | [
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-0.0191650390625,
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0.0079345703125,
-0.06494140625,
-0.109375,
-0.0223388671875,
-0.0086669921875,
0.0322265625,
0.0303955078125,
-0.053955078125,
0.0046081... | 27,984 | 27984 | |
Math Help
October 21st 2009, 06:03 AM #1
Junior Member
Joined
Sep 2009
Posts
62
Hi everyone,
I often saw in books :
"Sin(x)<x<Tan(x) thus Cos(x)<Sin(x)/x<1 for (0, π/2)".
So I was wondering how can I show that:
Sin(x)<x<Tan(x) => Cos(x)<Sin(x)/x<1 for (0, π/2)
I tired a few things... | 5 | [
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0.041748046875,
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0.033935546875,
0.032958984375,
0.0284423828125,
-0.044677734375,
-0.03271484375,
0.056884765625,
0.00335693359375,
0.064453125,
-0.0281982421875,
0.0830078125,
0.017... | 27,985 | 27985 | |
egative terms
Using the balance model with negative terms in an equation
It is not so easy to portray negatives in an equation with the balance model because in the natural we don't have any 'negative weight', but you can think of the negatives as h... | 4 | [
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0.11328125,
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0.0830078125,
0.08056640625,
0.0283203125,
0.012939453125,
0.05517578125,
-0.00836181640625,
... | 27,986 | 27986 | |
Neutrino Dispersion Relations from a Dark Energy Model
ISRN High Energy Physics
Volume 2013 (2013), Article ID 497071, 9 pages
http://dx.doi.org/10.1155/2013/497071
Research Article
Neutrino Dispersion Relations from a Dark Energy Model
^1TPCSF, IHEP, Chinese Academy of Sciences, Yu Quan Lu 19(B), Beijing 100049, Ch... | 4 | [
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0.... | 27,987 | 27987 | |
Function Differentiability/ Inverse trigonometry problem.
August 5th 2012, 12:49 AM #1
Newbie
Joined
Aug 2012
From
bangalore, india
Posts
1
Function Differentiability/ Inverse trigonometry problem.
okay here's the link:
Image0018 | Flickr - Photo Sharing!
now i know you can get it with plai... | 4 | [
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0.0859375,
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0.04150390625,
0.020751953125,
0.0072021484375,
-0.0018310546875,
-0.0712... | 27,988 | 27988 | |
Integrate (Sinx)^2
Recall that $\cos^2{x} + \sin^2{x} = 1$ and $\cos^2{x} - \sin^2{x} = \cos{2x}$. So if you subtract the second equation from the first... $(\cos^2{x} + \sin^2{x}) - (\cos^2{x} - \sin^2{x}) = 1 - \cos
{2x}$ $2\sin^2{x} = 1 - \cos{2x}$ $\sin^2{x} = \frac{1}{2} - \frac{1}{2}\cos{2x}$. Therefore: $\int{\s... | 5 | [
0.04931640625,
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0.0888671875,
... | 27,989 | 27989 | |
Proof using Lagrange M Mean Value Theorem
Using Lagrange Mean Value Theorem prove that for every a,b are real numbers on has |sina-sinb|<or=|a-b|
Let $a,b\in\mathbb{R}$. We know by the MVT that $\frac{\sin(a)-\sin(b)}{a-b}=f'(c)\implies \left|\sin(a)-\sin(b)\right|\leqslant |f'(c)||a-b|$ for some $c\in(a,b)$. But, $f'... | 5 | [
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0.09228515625,
-0.01843261... | 27,990 | 27990 | |
Equation of Lines
February 1st 2009, 08:51 PM
mathhomework
Equation of Lines
Given that the straight lines L1: kx+4y=1 and L2: 3x+y=2+kx are parallel.
a. find the value of the constant k.
b. if the line L3 is parallel to L2 and its x-intercept is greater than the x-intercept of L2 by 4, find the equatio... | 4 | [
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... | 27,991 | 27991 | |
Critical Numbers
May 18th 2010, 01:06 PM #1
Newbie
Joined
May 2010
Posts
8
Critical Numbers
Find the critical numbers of the function. (Round your answers to three decimal places.)
s(t) = 3t4 + 4t3 − 6t2
Set $s'(t)=0$.
You get (I assume by t2 you mean $t^2$ for example) $12t^3 + 12t^2 - 12t... | 4 | [
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Linear transformation
July 27th 2009, 12:30 PM
justin016
Linear transformation
Consider the basis S={ v1,v2 } where v1= (-2,1), v2=(1,3) and let
T : R^2 --> R^3 be the linear transformation such that
T(v1) = ( -1,2,0) and T(v2) = (0,-3,5)
Find a formula for T( x1, x2)
Here what I did
let ... | 5 | [
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... | 27,993 | 27993 | |
Differrentiate this function
October 15th 2010, 09:45 AM #1
Member
Joined
Mar 2009
Posts
76
Differrentiate this function
Hi all, just stuck with a simple equation at the moment and dont really know how to solve it. Hope you guys could assist me! Thanks.
The function is given as:
y= 1/C (1 - e^(... | 5 | [
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-... | 27,994 | 27994 | |
Homework Help
Posted by some kid on Sunday, April 12, 2009 at 7:40pm.
Let R be the first quadrant region enclosed by the graph of y= 2e^-x and the line x=k.
a) Find the area of R in terms of k.
b) Find the volume of the solid generated when R is rotated about the x-axis in terms of k.
c) What is the volume in part ... | 5 | [
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the encyclopedic entry of scalar matrix
In
linear algebra
, a
diagonal matrix
is a
square matrix
in which the entries outside the
main diagonal
(↘) are all zero. The diagonal entries themselves may or may not be zero. Thus, the matrix D = (d
[i,j]
) with n columns and n rows is diagonal if:
$d_\left\{i,j... | 4 | [
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0... | 27,996 | 27996 | |
A Global Attractor in Some Discrete Contest Competition Models with Delay under the Effect of Periodic Stocking
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 101649, 7 pages
http://dx.doi.org/10.1155/2013/101649
Research Article
A Global Attractor in Some Discrete Contest Competition Models with Delay ... | 5 | [
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Logarithmic Function - Performance Problem
May 4th 2009, 11:43 AM
peekay
Logarithmic Function - Performance Problem
Been having trouble with this one, any help would be appreciated.
Log2x + Log4x = 5 (both the 2 and the 4 are subscripts)
So wouldn't you put it into exponential form and then solve for t... | 4 | [
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0.025634765625,
... | 27,998 | 27998 | |
Find the first 5 terms
March 30th 2007, 03:27 PM #1
Newbie
Joined
Mar 2007
Posts
7
Find the first 5 terms
Find the first five terms of the recursively defined sequences bellow,
a. a1 = 1, an+1=1 + 1/n
b. a1=2, a2=3,a3= 4, an-1 + an-3
c. a1=2, an+1=an!
Thx in advance!
What have yo... | 4 | [
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