content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
A Simple Hybrid Model for Short-Term Load Forecasting
Journal of Engineering
Volume 2013 (2013), Article ID 760860, 7 pages
http://dx.doi.org/10.1155/2013/760860
Research Article
A Simple Hybrid Model for Short-Term Load Forecasting
^1Mathematics Department, GVP College of Engineering for Women, Visakhapatnam 530048... | 4 | [
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-0.030029296875,
-0.03686... | 27,100 | 27100 | |
Common Coupled Fixed Point Theorems of Single-Valued Mapping for
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 901792, 24 pages
http://dx.doi.org/10.1155/2012/901792
Research Article
Common Coupled Fixed Point Theorems of Single-Valued Mapping for c-Distance in Cone Metric Spaces
School of Mathematic... | 5 | [
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Linear Algebra Preliminaries in "Finite Reflection Groups" by Grove and Benson
March 4th 2012, 12:36 AM #1
Linear Algebra Preliminaries in "Finite Reflection Groups" by Grove and Benson
I think, that I have understood the folowing argument in Grove & Benson. Can someone please check my argument?
Basically, t... | 5 | [
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Finding solutions for sin on a unit circle.
September 10th 2012, 03:29 PM
Chaim
Finding solutions for sin on a unit circle.
Hi!
I was confused with this.
I have to find all the solutions for 0<x<360^o if sinethreex=(square root2)/2
So I was confused with this.
I know (square root2)/2 occurs in 4... | 5 | [
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Interest rate swap problem
June 5th 2012, 03:35 AM
downthesun01
Interest rate swap problem
An interest rate swap is based on the yield curve given below.
$s_{1}=0.03$
$s_{2}=0.04$
$s_{3}= x$
$s_{4}=0.05$
The fixed payment swap rate is R=0.4936. Find the 3-year spot rate x.
I'm having t... | 5 | [
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Integral Questions
August 15th 2007, 07:07 AM #1
Integral Questions
How do u integrate:
$<br /> \int {x sec^{ 2 } x \,dx}<br />$
$<br /> \int_{1}^{e} \dfrac{ln \frac{1}{x}}{x}<br />$
$<br /> \int_{0}^{1} {x 3^{ x } \,dx}<br />$
$<br /> \int \dfrac{ln \frac{1}{x}}{x^{3}}<br />$
Help on any... | 5 | [
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Boundedness of Sublinear Operators with Rough Kernels on Weighted Morrey Spaces
Journal of Function Spaces and Applications
Volume 2013 (2013), Article ID 784983, 9 pages
http://dx.doi.org/10.1155/2013/784983
Research Article
Boundedness of Sublinear Operators with Rough Kernels on Weighted Morrey Spaces
Department ... | 5 | [
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Induction Proof n
May 30th 2013, 08:13 PM #1
Junior Member
Joined
Jul 2011
Posts
34
Induction Proof n
Hi, so I need to prove that 2^n > n for all positive numbers. I'm not sure if this is the right place to post this (couldnt find anywhere for basic proofs, but this is for my college linear
algebra/i... | 4 | [
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Cross product and dot product of forces expressed as complex numbers
1. The problem statement, all variables and given/known data
I have came up with an example to illustrate my question.
There is a rod, which can turn around p1.
p1p2 = (-1+j) m
p1p3 = (-3 + 3j) m
p1p4 = (1 - j ) m
F1 = (1+3j) N
F3 = (-1 - 2j ) ... | 5 | [
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Integral Proof
May 14th 2010, 02:15 AM #1
Junior Member
Joined
Apr 2010
Posts
56
Integral Proof
I have been asked to justify if the following statement is true or false.
'If the integral of f(x) >= 0 on [a,b], then f(x) is >= 0 on [a,b].
Would (8-x^2) over the domain [-4,4] be a counter example... | 5 | [
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Solid Suspension by an Upflow Mixture of Fluid and Larger Particles
Advances in Mechanical Engineering
Volume 2013 (2013), Article ID 859756, 8 pages
http://dx.doi.org/10.1155/2013/859756
Research Article
Solid Suspension by an Upflow Mixture of Fluid and Larger Particles
Dipartimento di Ingegneria Civile, Chimica e... | 4 | [
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Channel Estimation in DCT-Based OFDM
The Scientific World Journal
Volume 2014 (2014), Article ID 813429, 6 pages
http://dx.doi.org/10.1155/2014/813429
Research Article
Channel Estimation in DCT-Based OFDM
Institute of Communication Engineering, PLA University of Science and Technology, Yudao Street 14, Nanjing 21000... | 4 | [
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Proposition 7
If on the diameter of a circle a point is taken which is not the center of the circle, and from the point straight lines fall upon the circle, then that is greatest on which passes through the
center, the remainder of the same diameter is least, and of the rest the nearer to the straight line through the... | 4 | [
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A Generalization of a Greguš Fixed Point Theorem in Metric Spaces
Journal of Applied Mathematics
Volume 2014 (2014), Article ID 580297, 5 pages
http://dx.doi.org/10.1155/2014/580297
Research Article
A Generalization of a Greguš Fixed Point Theorem in Metric Spaces
^1Department of Mathematics, King Abdulaziz Universi... | 5 | [
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Alternatives to Mixture Model Analysis of Correlated Binomial Data
ISRN Probability and Statistics
Volume 2012 (2012), Article ID 896082, 10 pages
http://dx.doi.org/10.5402/2012/896082
Research Article
Alternatives to Mixture Model Analysis of Correlated Binomial Data
^1Department of Mathematics and Statistics, Old ... | 4 | [
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Control with Finite-Time Stability for Switched Systems under Asynchronous Switching
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 929503, 16 pages
http://dx.doi.org/10.1155/2012/929503
Research Article
Control with Finite-Time Stability for Switched Systems under Asynchronous Switching
^1Insti... | 4 | [
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Present Value, Future Value, Rate
June 16th 2007, 03:38 PM #16
X??
p= m/(1+rt) ...........this is the formula given
2000= X/(1+0.15*6/12) + X/(1+0.15*12/12) ....the interest is applied per year. we have 2 payments, one is after 6 months, the other is after a year. 6 months is 6/12 of a year (since we ha... | 4 | [
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substitution method question
April 9th 2006, 10:22 PM
cinder
substitution method question
Do can you tell when you can use the substitution method? I just tried it on $\int_{-1}^0(2x+3)^2dx$, but I don't get the right answer unless I square the $(2x+3)$ and then proceed normally.
What about substitution on ... | 5 | [
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Another problem (additive function)
November 11th 2006, 01:14 PM
JackStolerman
Another problem (additive function)
Suppose f is continuous R to R and that f(x+y)=f(x)+f(y) for all x and y. Prove that f(x)=xf(1).
Hint: Prove the result for all Z and then for all Q.
Any help appreciated.
Jack
Novembe... | 4 | [
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Dot product and Angle
January 26th 2011, 03:17 PM
nautica17
Dot product and Angle
This is a question from calculus 3 class.
"Find the dot product of the vectors and the cosine of the angle between them."
u = i - 3j + 7k
v = 8i - 2j - 2k
Okay, I get what to do, and I get answers but apparently ... | 4 | [
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The Normality Criteria of Meromorphic Functions Concerning Shared Fixed-Points
Discrete Dynamics in Nature and Society
Volume 2014 (2014), Article ID 654294, 8 pages
http://dx.doi.org/10.1155/2014/654294
Research Article
The Normality Criteria of Meromorphic Functions Concerning Shared Fixed-Points
^1School of Mathe... | 5 | [
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Contour Integration
June 9th 2008, 09:39 AM #1
Contour Integration
Here's the problem:
The function f(z) is holomorphic everywhere on a closed contour $\Gamma$, and also within $\Gamma$ except at a finite set of points where f has poles.
(Recall that a pole of order n at $z = \alpha$ occurs where f(z) i... | 5 | [
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[SOLVED] Weird Logarithm Question
February 15th 2009, 11:19 AM #1
Newbie
Joined
Oct 2008
Posts
16
[SOLVED] Weird Logarithm Question
y^5.6 = 4
Solve for y using logarithms.
I know how to solve this question without logs, and I know how to solve logs when the variable is in the exponent.
Th... | 4 | [
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Convergence for Weighted Sums of Sequences of Negatively Dependent Random Variables
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 425969, 13 pages
http://dx.doi.org/10.1155/2012/425969
Research Article
Equivalent Conditions of Complete Convergence for Weighted Sums of Sequences of Negatively Dependen... | 5 | [
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Number of possible musical chords and scales
March 14th 2012, 12:27 AM
Shunarjuna
Number of possible musical chords and scales
I hope I put this thread in the correct spot!
This is my first post and let me start by saying I am definitely not a mathematician. I am in fact a musician and I started thinking la... | 4 | [
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Question • /r/logic
Question (self.logic)
submitted by YouKnowThatGuyWeKnow
sorry, this has been archived and can no longer be voted on
So I'm doing this proof, and the book says it's invalid but I keep getting a contradiction.
1 ~(AB) 2 (~AvC) Therefor: ~(CB) 3 asm ~~(CB) 4 C F3 5 B F3 6 ~A F1,5 7 A F2,4 Contradic... | 4 | [
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Question invovling cyclinderical volume and such...
October 25th 2005, 04:57 PM #1
Zell_49
Guest
Question invovling cyclinderical volume and such...
Ok. I am stumped in my calculus class and need help with one of the problems. I am supposed to find the dimensions (r and h) of the cylinder that will minimize the c... | 5 | [
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Interpolation functions
December 22nd 2012, 08:41 AM
bugatti79
Interpolation functions
I am trying to establish what interpolation functions he used to obtain the 8 approximation functions (eqn 5.3.25a) shown in the attached excerpt from the book.
He states that a cubic approximation can be used for $w(x)$... | 4 | [
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-0.05419921875,
0.047607421875,
0.01226806640625,
-0.055419921875... | 27,127 | 27127 | |
Characteristic equation proof
May 6th 2009, 07:24 PM #1
Newbie
Joined
May 2009
Posts
6
Characteristic equation proof
Hi
Im confused on where to start in proving this question
Let A = $\left(\begin{array}{cc}a&b\\c&d\end{array}\right)$ where a, b, c and d are real numbers. Show that the characte... | 4 | [
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vectors and sclalar products
January 16th 2010, 03:12 AM #1
Member
Joined
Sep 2009
Posts
98
vectors and sclalar products
The points A,B and C have position vectors given respectively
a = ( 7i + 4j -2k) b= ( 5i + 3j - 3k) c= ( 6i + 5j - 4k)
a) Find the angle BAC
b) Find the area of the triang... | 4 | [
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0.005310... | 27,129 | 27129 | |
[ap calc ab] How do you derive an inverse tangent? (eq is y=tan^-1(4x/50), in terms of y) • /r/learnmath
[ap calc ab] How do you derive an inverse tangent? (eq is y=tan^-1(4x/50), in terms of y) (self.learnmath)
submitted by
sorry, this has been archived and can no longer be voted on
You can't simply move the tan... | 5 | [
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-0.... | 27,130 | 27130 | |
Normal Distribution (Prob something will be EXACT?)
April 23rd 2009, 08:14 PM
rikkoo
Normal Distribution (Prob something will be EXACT?)
Suppose x ~ N ($1400,$200^2) | Sales if soft drinks for a movie theater
a.) What percentage of sales are above $1450 for the week?
Is this correct?: P (x>1450) = p(z ... | 4 | [
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... | 27,131 | 27131 | |
the encyclopedic entry of Stable marriage
In
mathematics
, the
stable marriage problem (SMP)
is the problem of finding a
stable matching
— a
matching
in which no element of the first matched set prefers an element of the second matched set that also prefers the first element.
It is commonly stated as:
Giv... | 5 | [
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Binomial Trials, Probability, Please Help, I will love you.
April 24th 2006, 04:49 PM #1
IHateMyProf
Guest
Binomial Trials, Probability, Please Help, I will love you.
Alright here is the break down.....I would really appreciate someone helping me realize how to do this problem. I am so lost, my prof is a ****.
... | 5 | [
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Math (Algebra)
Posted by Bob on Monday, May 6, 2013 at 1:45am.
If the sum of 3 non-zero distinct real numbers a, b, and c is 2, and the two sets {a,b,c} and {1/a,1/b,1/c} are the same, what is the value of a^2+b^2+c^2?
Note: Two sets are the same if there is a one-to-one correspondence between their elements. For exa... | 4 | [
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A Strange Double-Deck Butterfly Chaotic Attractor from a Permanent Magnet Synchronous Motor with Smooth Air Gap: Numerical Analysis and Experimental Observation
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 495126, 11 pages
http://dx.doi.org/10.1155/2014/495126
Research Article
A Strange Double-Deck Bu... | 4 | [
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Power Management in Multiuser Adaptive Modulation Transmission under QoS Requirements
International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 730710, 9 pages
http://dx.doi.org/10.1155/2013/730710
Research Article
Power Management in Multiuser Adaptive Modulation Transmission under QoS Require... | 4 | [
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question about decay
August 16th 2009, 06:56 AM #1
Newbie
Joined
Aug 2009
Posts
9
question about decay
I would like to know which one is the right formula to calculate the decay if the book is asking to find the remaining radioactive salt after 75 years, knowing that the decay rate is 2% and we
had 1... | 5 | [
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Constant term
How do I find the constant term in ((-x)^3+(-3/x))^24 ?
Last edited by TheEmptySet; April 3rd 2008 at 12:07 PM. Reason: La tex error
I've tried using this, but I get the wrong answer in the end..
You need the term such that: (Ax^3)^a*(Bx^-1)^(24-a) is constant. This is only satisfied when a = 6 Hence t... | 5 | [
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-0.02... | 27,138 | 27138 | |
Find the sum of the series.
July 20th 2011, 10:09 PM #1
Junior Member
Joined
Jul 2011
Posts
28
Find the sum of the series.
$\sum_{k = 0}^\infty \frac{3^{k-1}}{4^{3k+1}}$
$\sum_{k = 0}^\infty \frac{3^{k}*3^{-1}}{4^{3k}*4^{1}}$
$\sum_{k = 0}^\infty \frac{3^{k}}{(4^{3})^{k}*4^{1}*3^{1}}$
$(\frac... | 4 | [
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Nasty derivative
February 8th 2010, 10:08 AM
wolfhound
Nasty derivative
Hello,
I was wondering if someone could show me how to do this?
Differentiate $a^{2} (a- a^{4} )^{3}$ Value of $a=x^{-2}$
I can't figure it out
February 8th 2010, 10:15 AM
HallsofIvy
Quote:
Do you mean "differentiate... | 5 | [
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The Structure of an Automatic Decision System for a Large Number of Independent Particle Detectors
Advances in High Energy Physics
Volume 2013 (2013), Article ID 839570, 6 pages
http://dx.doi.org/10.1155/2013/839570
Research Article
The Structure of an Automatic Decision System for a Large Number of Independent Parti... | 4 | [
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0.03271484375,
-0.01306152343... | 27,141 | 27141 | |
binomials...
September 17th 2009, 06:35 PM #1
Newbie
Joined
Sep 2009
Posts
15
binomials...
oh...my questions are challenge enough..wish someone can answer me this binomial theory...i really sucks at this..
Show that,
$<br /> \sum_{k=0}^{n}\binom{k+n}{k}{2}^{-k}=2^n<br />$
Did you copy that... | 5 | [
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A Frame Element Model for the Nonlinear Analysis of FRP-Strengthened Masonry Panels Subjected to In-Plane Loads
Advances in Materials Science and Engineering
Volume 2013 (2013), Article ID 754162, 12 pages
http://dx.doi.org/10.1155/2013/754162
Research Article
A Frame Element Model for the Nonlinear Analysis of FRP-S... | 4 | [
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l’Hopital’s Rule Help..
Hey guys having trouble solving this . Use l’Hopital’s rule to find: $\lim_{x\to0}\frac{cosx-1}{x^2}$ any help much appreciated
1)Find derivatives separately 2) Divide the numerator's derivative by denominator's derivative 3)If on putting the limit you get a definite answer than game over!! 4) ... | 5 | [
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Proving and finding values.
November 27th 2010, 06:31 PM #1
Junior Member
Joined
Nov 2010
Posts
50
Proving and finding values.
I am having some problems with these questions,can anybody help?
2) It is given that sinA = 5/13 where 90<A<180(degrees) , and that cosB = -33/65 , where 180<B<270. Find the... | 4 | [
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0.048095703125,
-0.03173828125,
... | 27,145 | 27145 | |
First Proofs class.
January 13th 2012, 02:08 PM
resjsu
First Proofs class.
So the semester just started and im already drowning. Im usually pretty good at math but I just dont get proofs.
I need help with a few problems (ive already attempted them multiple times), ill just post one at a time.
The first... | 4 | [
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0.06640625,
-0.002777099609375,
0.02... | 27,146 | 27146 | |
Combination Proof - Need help understanding steps in answer
February 4th 2010, 06:20 PM #1
Member
Joined
Sep 2009
Posts
83
Combination Proof - Need help understanding steps in answer
Hey,
I am working through some review questions for my mid term, and came across this problem:
Prove:
$C(n , ... | 4 | [
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0.0174560546875,
-0.007659912109375,
-0... | 27,147 | 27147 | |
Trig problem...
March 15th 2009, 11:36 AM #1
Newbie
Joined
Mar 2009
Posts
11
Trig problem...
I'm stuck on this problem...
Find all solutions in the interval [0,2π]: 1 - sinx = 2 cos^2x
any help would be appreciated.
Trig equation
Hello adam456006
Use the identity $\cos^2x = 1-\sin^2x$... | 4 | [
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About even and uneven numbers and about rational and irrational numbers
September 14th 2008, 09:00 AM
antrewry
About even and uneven numbers and about rational and irrational numbers
ok I have some problems that I need help with:
if a^2 is even, then prove that a is even too
if a^2 is uneven, then prove ... | 4 | [
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0.027... | 27,149 | 27149 | |
The Rothe's Method to a Parabolic Integrodifferential Equation with a Nonclassical Boundary Conditions
International Journal of Stochastic Analysis
Volume 2010 (2010), Article ID 519684, 16 pages
http://dx.doi.org/10.1155/2010/519684
Research Article
The Rothe's Method to a Parabolic Integrodifferential Equation with... | 5 | [
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-0.039794921875,
-0.0737304687... | 27,150 | 27150 | |
The Smoothing Artifact of Spatially Constrained Canonical Correlation Analysis in Functional MRI
International Journal of Biomedical Imaging
Volume 2012 (2012), Article ID 738283, 11 pages
http://dx.doi.org/10.1155/2012/738283
Research Article
The Smoothing Artifact of Spatially Constrained Canonical Correlation Anal... | 4 | [
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-0.033203125,
-0.0186767578125,
-0.03... | 27,151 | 27151 | |
Thomas algorithm number operations
November 21st 2011, 10:59 AM #1
Member
Joined
Nov 2010
Posts
164
Thomas algorithm number operations
I have to find the number of operations needed by Thomas algorithm for an nxn tridiagonal matrix.
The Thomas algorithm is divided into two parts, the forward sweep a... | 4 | [
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0.0255126953125,
-0.03857421875,
0.... | 27,152 | 27152 | |
Math Help
January 6th 2008, 11:42 PM #1
Newbie
Joined
Jan 2008
Posts
3
binomial
For natural numbers m<=n calculate (i.e. express by a simple formula not containing a sum) sigma (k=m) to (n) (k choose m) (n choose k).
I hope someone comes with a proof by double counting. I want to see one
I hate... | 5 | [
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0.039... | 27,153 | 27153 | |
Please check my work
June 3rd 2006, 09:31 AM #1
Junior Member
Joined
Jun 2006
Posts
53
Please check my work
find the lim as x approaches 0 for sin(sin(sin(kx)))/x
I used l'Hopital's rule and got this
lim as x approaches 0 for cos(sin(sin(kx)cos(sin(kx))kcos(kx)
the answer is 0.
Nichel... | 5 | [
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-0.03564453125,
0.005035400390625... | 27,154 | 27154 | |
Math Help
November 30th 2011, 08:54 AM #1
Newbie
Joined
Nov 2011
Posts
5
Cylic
1. Suppose G = Z12 x Z12 and H =<(2,2)> is the subgroup generated by (2,2). Find the order of the element (5, 8) + H in G/H and prove it. Is G/H cyclic? Explain.
2. Find a direct product of cyclic groups of prime power o... | 5 | [
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0.00921630859375,
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Quick angular measurement question about moon. Thanks!
nukeman
Does the following make sense
Not entirely.
nukeman
, and is correct?
Your result is correct, yes. But I'm not convinced that you understand why.
nukeman
Our Equation will ultimately read: 57.3 x do/d
Now lets plug in out data points that have ... | 4 | [
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0.0303955078125,
-0.05541992187... | 27,156 | 27156 | |
Unsteady Unidirectional Flow of Second-Grade Fluid through a Microtube with Wall Slip and Different Given Volume Flow Rate
Mathematical Problems in Engineering
Volume 2010 (2010), Article ID 416837, 17 pages
http://dx.doi.org/10.1155/2010/416837
Research Article
Unsteady Unidirectional Flow of Second-Grade Fluid thro... | 5 | [
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0.0947265625... | 27,157 | 27157 | |
Ductility Enhancement of Post-Northridge Connections by Multilongitudinal Voids in the Beam Web
The Scientific World Journal
Volume 2013 (2013), Article ID 515936, 14 pages
http://dx.doi.org/10.1155/2013/515936
Research Article
Ductility Enhancement of Post-Northridge Connections by Multilongitudinal Voids in the Bea... | 4 | [
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0.031494140625... | 27,158 | 27158 | |
Math Help
November 28th 2009, 10:07 AM #1
Member
Joined
Oct 2009
Posts
80
Limits
Assuming the result lim x approaches 0 (sinx)/(x) = 1, evalute
1) lim x approaches 0 (1-cosx)/(x)
2) lim x approaches 0 (1-cosx)(x^2)
3) lim x approaches 0 (tanx-sinx)/(x^3)
Can anyone help, I would appr... | 5 | [
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-0.... | 27,159 | 27159 | |
dy dx of the curve
June 6th 2010, 04:45 AM #1
dy dx of the curve
find dydx of
x^2 + 3xy + 2y^2 = 5
My working
2y^2 = 5 - x^2 - 3xy
y^2 = 1/2 . (5 - x^2 - 3xy)
y = root 1/2 . (5 - x^2 - 3xy)
y = 1/2 . (5 - x^2 - 3xy)^1/2
y = (2.5 - 1/2x^2 - 1.5xy)^1/2
y1 = 1/2 (2.5 - 1/2x^2 ... | 5 | [
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0.050537109375,
-0.08349609375,... | 27,160 | 27160 | |
How can i explain???
June 6th 2010, 05:43 AM #1
Junior Member
Joined
Nov 2009
Posts
27
How can i explain???
I have shown that:
When $\rho = \beta + i \gamma$
Then
$\frac{x^{\rho}}{\rho} +\frac{x^{\overline \rho}}{\overline\rho} = \frac{2x^{\beta}}{|\rho|} cos(\gamma In(x) - \theta)$
H... | 5 | [
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Effect of Mechanism Error on Input Torque of Scroll Compressor
International Journal of Rotating Machinery
Volume 2013 (2013), Article ID 438127, 5 pages
http://dx.doi.org/10.1155/2013/438127
Research Article
Effect of Mechanism Error on Input Torque of Scroll Compressor
College of Petrochemical Technology, Lanzhou ... | 4 | [
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Real and imaginary numbers
April 29th 2010, 06:03 AM #1
Junior Member
Joined
Apr 2010
Posts
26
Real and imaginary numbers
I am having trouble with Q5 in the attached file,
For part (a) after expanding and simplifying I have the answer:
f(z)=(36x^2)+4iBy-12ix
How would I wite the real and i... | 4 | [
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... | 27,163 | 27163 | |
properties of radical of an ideal
April 10th 2011, 11:48 AM #1
Junior Member
Joined
Feb 2011
Posts
72
properties of radical of an ideal
Hello everybody;
Let $R$ be commutative ring with unity and let $I$ and $J$ be two ideals of $R$ Show that
$\sqrt{I+J}=\sqrt{\sqrt{I}+\sqrt{J}}$
$\sqrt{I+... | 5 | [
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0.044189453125,
0.007110595... | 27,164 | 27164 | |
Please check if the differential equation is correct
rohit99
I am practising for my test. The question is to solve a differential equation
dy/dx + y/x + 1 = 5x
You mean y/(x+1).
y(0) = 1.
The answer that i have come up with is
(xy+y)= 5x^3/3+5x^2/2+c
by substituting the values x=0 and y=1 in to the general equ... | 5 | [
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Evaluation of Vapor Pressure Estimation Methods for Use in Simulating the Dynamic of Atmospheric Organic Aerosols
International Journal of Geophysics
Volume 2013 (2013), Article ID 612375, 13 pages
http://dx.doi.org/10.1155/2013/612375
Research Article
Evaluation of Vapor Pressure Estimation Methods for Use in Simula... | 4 | [
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-0.0267333984375,
-0.00196838378906... | 27,166 | 27166 | |
A Study on Vibration Characteristics and Stability of the Ambulance Nonlinear Damping System
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 501081, 12 pages
http://dx.doi.org/10.1155/2013/501081
Research Article
A Study on Vibration Characteristics and Stability of the Ambulance Nonlinear Damping System... | 4 | [
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the encyclopedic entry of stereographic projection
In geometry, the stereographic projection is a particular mapping (function) that projects a sphere onto a plane. The projection is defined on the entire sphere, except at one point — the projection
point. Where it is defined, the mapping is smooth and bijective. It is... | 4 | [
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0.01324462890625,
0.03344726... | 27,168 | 27168 | |
Oscillation Criteria for Fourth-Order Nonlinear Dynamic Equations on Time Scales
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 740568, 11 pages
http://dx.doi.org/10.1155/2013/740568
Research Article
Oscillation Criteria for Fourth-Order Nonlinear Dynamic Equations on Time Scales
^1College of Mathemati... | 5 | [
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basic surds
February 22nd 2011, 07:50 PM
harun
basic surds
I was helping someone with this problem and I thought you could only simplify it and nothing more. Is it possible to find values of a and b?
$\frac{3}{2\sqrt{5}} = \frac{\sqrt{a}}{b}$
The only way I could think of solving it was equating it as ... | 4 | [
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-0.06982421875,
0.0639648437... | 27,170 | 27170 | |
Bangalore University, 2th semester , bcom,Examination -May - 2011, Business Statistics model question papers
Download Model question papers & previous years question papers Awards & Gifts
... | 4 | [
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0.040527343... | 27,171 | 27171 | |
Homework Help
Posted by Anonymous on Wednesday, June 27, 2012 at 6:56pm.
Three cards are randomly chosen, without replacement, from a standard deck of
52. The random variable X represents the number of hearts cards chosen.
Construct the probability distribution for X.
• statistics - MathMate, Wednesday, June 27, ... | 4 | [
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-0.0038452148437... | 27,172 | 27172 | |
Re: Rehash of regular expression question...
dobrien@seas.gwu.edu (David O'Brien)
Mon, 21 Feb 1994 00:19:20 GMT
From comp.compilers
| List of all articl... | 5 | [
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0.0908203125,
-0.05029296875,
0.082519... | 27,173 | 27173 | |
Table of marks
December 20th 2010, 03:28 AM #1
Newbie
Joined
Dec 2010
Posts
6
Table of marks
Hi all,
I'm trying to figure out how the table of marks is calculated. For those of you unfarmiliar with it it is defined on the wikipedia page here (under the section marks), the important bit being:
F... | 4 | [
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... | 27,174 | 27174 | |
Calculate electric field of infinite slab
zezima1
1. The problem statement, all variables and given/known data
An infinite plane slab of thickness 2d lies in the xy-plane with −d<z<d. Its charge density is given
as ρ = kz^2 for −d<z< d and zero otherwise.
(i) Find the electric field, E(z), for all z.
2. Relevant eq... | 4 | [
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-0.0629882... | 27,175 | 27175 | |
Find the normalized eigenspinors of the 2 x 2 matrix
Each hermitian matrix A can be diagonalized by a unitary matrix U so that UAU*=D is diagonal. On the diagonal you have then eigenvalues d1,d2,...,dn (for nxn matrix). But
det(UAU*)=det(A) and Tr(UAU*=Tr(A). Now det(D)=d1....dn, and Tr(D)=d1+...dn. It follows that de... | 4 | [
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-0.0625,
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0.0556640625... | 27,176 | 27176 | |
CMS Winter 2005 Meeting
I will discuss two classical problems in analysis and geometry posed on n-dimensional flat torus. I will focus on some interesting questions which remain open. I will then discuss a nonlocal
isoperimetric problem with an emphasis on the calculation and application of its first and second... | 4 | [
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0.0449218... | 27,177 | 27177 | |
Today's Putnam Problem of the Day
May 19th 2010, 12:11 AM #1
Super Member
Joined
Jan 2009
Posts
715
Today's Putnam Problem of the Day
Evaluate the sum
$<br /> S = \frac{1}{ \cos{0^o} \cos{1^o} } + \frac{1}{ \cos{1^o} \cos{2^o} } + ... + \frac{1}{ \cos{88^o} \cos{89^o} }<br />$
Source : http://w... | 5 | [
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0.0432128906... | 27,178 | 27178 | |
Mathematical Induction question
February 23rd 2013, 04:31 AM
tsyet12
Mathematical Induction question
Question:Prove by mathematical induction that if U[n+2]= 3U[n+1] - 2U[n] for all positive integers n, and U[1 ]= 1 , U[2] = 3 , then U[n ]= 2^n - 1.
How to deal with relations that includes 3 terms in mathem... | 4 | [
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-... | 27,179 | 27179 | |
How To Find The Median And Variance?
March 21st 2010, 03:48 PM #1
Member
Joined
Apr 2008
Posts
123
How To Find The Median And Variance?
Can somebody show me how to find the median and variance of this piece wise function? I've been trying so hard to do it.
f(x) =
4/(x^5) , x >= 1
0, otherwis... | 5 | [
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-0.05395... | 27,180 | 27180 | |
How close each other 2^x and 10^y can situate if x and y are natural numbers?
January 26th 2013, 01:18 AM
kpkkpk
How close each other 2^x and 10^y can situate if x and y are natural numbers?
If we have 2^3, itīs distance from 10^1 is only 2.
If we have 2^10, itīs distance from 10^3 is 24 (as 2^10=1024 and 1... | 5 | [
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-0.0103... | 27,181 | 27181 | |
Distance between planes (Proof)
March 19th 2011, 09:02 AM #1
Member
Joined
Oct 2009
Posts
80
Distance between planes (Proof)
Consider two plans P1: ax + by + cz + e = 0 and P2: ax + by +cz + f = 0. Show that the distance between P1 and P2 is given by d = l e-f l / sqrt(a^2 + b^2 +c^2)
* any idea on ... | 4 | [
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0.003814697265625,
-0.07275390625,
0.0048828125,
-0.038818359375,
-0.099609375... | 27,182 | 27182 | |
A Bayesian Network Model for Origin-Destination Matrices Estimation Using Prior and Some Observed Link Flows
Discrete Dynamics in Nature and Society
Volume 2014 (2014), Article ID 192470, 9 pages
http://dx.doi.org/10.1155/2014/192470
Research Article
A Bayesian Network Model for Origin-Destination Matrices Estimation... | 4 | [
0.041015625,
-0.057861328125,
0.02001953125,
0.036376953125,
0.0174560546875,
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0.03637695312... | 27,183 | 27183 | |
Gauss-Jordan reduction to find the inverse of a matrix
May 8th 2011, 02:47 AM
brumby_3
Gauss-Jordan reduction to find the inverse of a matrix
Use Gauss-Jordan reduction of (A:I) to find A^-1.
The matrix is: 1 1 0/1 1 1/0 2 1 (ie 3x3 matrix)
I know you add the matrix on the right side with the diagonal ... | 5 | [
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-0.0157470703125,
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-0.0037078857421875,
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-0.0030975341796875,
0.035888671875,
0.03369140625,
0.0390625,
0.03955078125,
-0.042724609375,
-0.0908203125,
-0.0005340576171875,
-0.000471115112... | 27,184 | 27184 | |
How many labelled disconnected simple graphs have n vertices and floor((n choose 2)/2) edges?
MathOverflow is a question and answer site for professional mathematicians. It's 100% free, no registration required.
I would like to know the asymptotic number of labelled disconnected (simple) ... | 5 | [
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0.02880859375,
0.02880859375,
0.059814453125,
-0.10107... | 27,185 | 27185 | |
A Hybrid Network Model to Extract Key Criteria and Its Application for Brand Equity Evaluation
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 971303, 14 pages
http://dx.doi.org/10.1155/2012/971303
Research Article
A Hybrid Network Model to Extract Key Criteria and Its Application for Brand Equity... | 4 | [
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Fixed-point iteration 'show that' exercise
September 15th 2010, 04:57 AM #1
Fixed-point iteration 'show that' exercise
Hi,
problem:
The iteration defined by $x_{k+1} = \frac{1}{2}(x^2_k+c)$, where $0<c<1$,
has two fixed points $\xi_1, \xi_2$ where $0<\xi_1<1<\xi_2$. Show that
$x_{k+1} - \xi_1 ... | 5 | [
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0.0260009765625,
0.00396728515625,
-0.0... | 27,187 | 27187 | |
Without Absolute Values
December 1st 2009, 08:00 AM #1
Banned
Joined
Dec 2009
From
NYC
Posts
84
Without Absolute Values
Write the following expressions without using absolute values.
(1) |b - 3| if ≥ 3
(2) |u - v|/|v - u| if u does not = v, u does not = 0 and v does not = 0.
(3) |a - 5... | 4 | [
-0.0169677734375,
0.0166015625,
-0.040771484375,
-0.13671875,
0.02099609375,
0.01275634765625,
-0.0166015625,
0.0213623046875,
-0.029541015625,
-0.0205078125,
0.004150390625,
-0.0205078125,
0.08349609375,
0.039306640625,
0.02734375,
0.01318359375,
0.030517578125,
-0.045654296875,
... | 27,188 | 27188 | |
[SOLVED] How do I get to answer this problem ?
how do I solve this.... (a+b)squared - (c+d)squared ??? Please help me by giving me the solution.... :) THANKS !!!
Quote: Originally Posted by china_88 Remember the diffrence of two squares, $x^2-y^2=(x+y)(x-y)$ Thus, $(a+b)^2-(c+d)^2$ Over here $x=a+b,y=c+d$. Thus, (wat... | 4 | [
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0.0654296875,
0.027099609375,
0.05029296875,
-0.01165771484375,
0.1... | 27,189 | 27189 | |
Matrix Conic Equation
August 18th 2009, 09:10 PM #1
Newbie
Joined
Mar 2009
Posts
15
Matrix Conic Equation
I need to write this equation here: X1^2+X1X2+X2^2=8
in the form of X^TAX=8
Once ive done that i nee to be able to find the matrix Q such that the transformation X=QY diagonalises A and re... | 4 | [
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0.0048828125,
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0.1748046875,
-0.095703125,
0.... | 27,190 | 27190 | |
Sectors, Areas, and Arcs: Worked Examples (page 2 of 2)
• A wheel has a diameter of 100 cm. If the wheel is supporting a craft moving at 45 kilometers per hour, then what is the angular velocity of the wheel, to the nearest whole number of revolutions
per minute?
The "angular velocity" is the number of time... | 4 | [
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0.050048828... | 27,191 | 27191 | |
<help> Differential Equations... MAPS (urgent)
August 10th 2007, 11:55 PM
jungohyj
<help> Differential Equations... MAPS (urgent)
Task:
There are some differential equations that require other techniques in order to solve them. One type, called homogenous, requires a substitution in order to solve.
The s... | 5 | [
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Stabilization for Networked Control Systems with Random Sampling Periods
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 252679, 14 pages
http://dx.doi.org/10.1155/2013/252679
Research Article
Stabilization for Networked Control Systems with Random Sampling Periods
^1Institute of Systems Science, North... | 4 | [
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0.0634765625,
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0.05517578125,
0.0419921875,
-0... | 27,193 | 27193 | |
On the Normed Space of Equivalence Classes of Fuzzy Numbers
The Scientific World Journal
Volume 2013 (2013), Article ID 792484, 5 pages
http://dx.doi.org/10.1155/2013/792484
Research Article
On the Normed Space of Equivalence Classes of Fuzzy Numbers
College of Mathematics and Physics, Chongqing University of Posts ... | 5 | [
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... | 27,194 | 27194 | |
Patent US4331941 - Digital phase domain amplitude modulation method and apparatus
BACKGROUND OF THE INVENTION
A known method for synthesizing sine waves is to generate harmonic frequencies from a reference clock and filter a selected harmonic frequency to obtain a desired frequency output. Another known
method is to u... | 4 | [
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0.0625,
... | 27,195 | 27195 | |
Strong Convergence Iterative Algorithms for Equilibrium
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 619762, 9 pages
http://dx.doi.org/10.1155/2013/619762
Research Article
Strong Convergence Iterative Algorithms for Equilibrium Problems and Fixed Point Problems in Banach Spaces
^1Department of Applie... | 5 | [
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0.0322265625,
0.032470703125,
-0.0322265625,
-0.00592041015625,
0.0252685546875,
0.02392578125,
-0.05... | 27,196 | 27196 | |
Drop Impact Analysis of Cushioning System with an Elastic Critical Component of Cantilever Beam Type
Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 379068, 5 pages
http://dx.doi.org/10.1155/2013/379068
Research Article
Drop Impact Analysis of Cushioning System with an Elastic Critical Component o... | 5 | [
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-0.07275390625,
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0.017578125,
0.0498046875,
-0.103... | 27,197 | 27197 | |
Impulse
April 8th 2008, 03:55 PM
vesperka
Impulse
A(n) 8.9g bullet is fired into a(n) 132g block
of wood at rest on a horizontal surface and
stays inside. After impact, the block slides
13m before coming to rest.
The acceleration of gravity is 9.8 m/s^2/
If the coeffcient of friction betwee... | 5 | [
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-0.001800537109375,
0.0439453125,
0... | 27,198 | 27198 | |
Am I doing this right?
February 18th 2010, 11:45 AM #1
Newbie
Joined
Dec 2008
Posts
21
Am I doing this right?
It's a simplification. I'm supposed to simplify so that only one variable is present at the end.
x = [sin(A+B)/2]/sin(A/2)
Here's what I've done so far...
x = 2[sin(A+B)] / 2[sin(A... | 4 | [
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0.055908203125,
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0.083984375,
0.0869140625,
0.09228515625,
-0.0262451171875,
0.093261718... | 27,199 | 27199 |