content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
With respect to y
September 16th 2009, 09:42 PM
el123
With respect to y
$\frac{x^4}{1-xy}$
find derivative with respect to y.holding x constant.
$f_y=\frac{[(4x^3)(1-xy)]-[(x^4)(-x)]}{(1-xy)^2}$
$f_y= \frac{4x^3-4x^4y+x^5}{(1-xy)^2}$
Is that right or did i do that wrong?
Or is is suppos... | 4 | [
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-0.11... | 28,200 | 28200 | |
Metric space
March 29th 2011, 01:42 PM #1
Junior Member
Joined
Mar 2011
Posts
49
Metric space
Let $(X,d)$ be a metric space, prove that $\phi(x,y)=\dfrac{d(x,y)}{1+d(x,y)}$ is a metric over $X.$ Moreover $X$ is bounded with the metric $\phi$ and $\text{diam}\, X<1.$
First part is easy, now I wanted ... | 4 | [
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-0... | 28,201 | 28201 | |
Solving complex equations
March 26th 2011, 01:53 PM #1
Newbie
Joined
Mar 2011
Posts
2
Solving complex equations
I am trying to solve two complex equations, but as I've never really dealt with complex numbers and equations before, I've run into trouble.
The equations are as follows:
$T_{L} = i \... | 4 | [
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0.035888671875,
-0.0859375,
0.036... | 28,202 | 28202 | |
Conics, Lines questions
May 17th 2009, 02:14 PM #1
Junior Member
Joined
May 2009
Posts
65
Conics, Lines questions
1)Find the equation(s) of the locus of point P that is a constant distance of 4 units from the locus defined by y=2x+1.
No idea how to go about doing this
2) Find the equation of th... | 4 | [
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Why does X/XA square root become square root of XR Ohms calculation
June 23rd 2012, 06:20 AM #1
Newbie
Joined
Jun 2012
From
Staffordshire, England
Posts
13
Thanks
1
Why does X/XA square root become square root of XR Ohms calculation
While explaining Ohms law to someone I realised I did not unders... | 4 | [
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Solving Using Substitution
November 29th 2011, 12:31 PM #1
Newbie
Joined
Nov 2011
Posts
8
Solving Using Substitution
Hey Everyone! I'm going to have a few emergency help questions today and early tomorrow. I have a huge test.
My problem right now is solving with substitution, and I am given the foll... | 4 | [
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0.... | 28,205 | 28205 | |
Dynamic Analysis of Nonlinear Impulsive Neutral Nonautonomous Differential Equations with Delays
Abstract and Applied Analysis
Volume 2014 (2014), Article ID 624897, 7 pages
http://dx.doi.org/10.1155/2014/624897
Research Article
Dynamic Analysis of Nonlinear Impulsive Neutral Nonautonomous Differential Equations with... | 5 | [
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... | 28,206 | 28206 | |
99 questions/54A to 60
From HaskellWiki
< 99 questions
(Difference between revisions)
← Older edit Newer edit →
Line 276: Line 276:
*Main> length $ hbalTreeNodes 'x' 15 *Main> length $ hbalTreeNodes 'x' 15
1553 ... | 5 | [
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Existence and Exponential Stability of Equilibrium Point for Fuzzy BAM Neural Networks with Infinitely Distributed Delays and Impulses on Time Scales
Journal of Applied Mathematics
Volume 2014 (2014), Article ID 721586, 17 pages
http://dx.doi.org/10.1155/2014/721586
Research Article
Existence and Exponential Stabilit... | 5 | [
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0.... | 28,208 | 28208 | |
Floating-point numbers - General view
4-1 FLOATING-POINT NUMBERS - GENERAL VIEW
******************************************
The real number system
----------------------
Scientific and engineering calculations are performed in the REAL
NUMBER SYSTEM, a highly abstract mathematical construct.
A real number is ... | 4 | [
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-... | 28,209 | 28209 | |
Derivative Question
October 2nd 2008, 02:01 PM
fishguts
Derivative Question
I have started reviewing derivative in class and have a few questions.
First off I am wondering if I have calculated the derivatives for the following correctly.
1) f(t) = 2 - (2/3)t
f'(t) = -2/3
2)f(x) = (√x^5)- 3x^-7
... | 5 | [
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Factor Large Factorial
How could I factor 30! into prime factors? Can you show the steps please... Thanks in advance
Hello, jzellt! I'll use the "greatest integer function": . $[x]$ Quote: Factor 30! into prime factors. 30! contains $2^{26}$ . . How do we know this? Every 2nd term is even, contains a factor of two.
. ... | 4 | [
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Revenue Function - Integrals
February 21st 2010, 07:12 AM #1
Junior Member
Joined
Feb 2009
Posts
64
Revenue Function - Integrals
The marginal-revenue function for a manufacturer's product is of the form
$<br /> \frac{dr}{dq}=\frac{a}{e^q+b}<br />$
for constands a and b, where r is total revenue r... | 5 | [
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sicp-ex-2.92
Here is my answer. It gives x a value of 1, and all other variables are 0. So everything will be "raised" to a polynomial in x. I have also implemented mixed operation of polynomials with all the
other types used in the chapter.
(define (install-polynomial-package)
;; internal procedures
;; repres... | 4 | [
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-0.099609375... | 28,213 | 28213 | |
Proof for Associative Law for Symmetric Difference
January 7th 2009, 05:43 PM #1
Member
Joined
Apr 2008
Posts
123
Proof for Associative Law for Symmetric Difference
That is, prove that A delta (B delta C) = (A delta B) delta C.
I managed a lengthy proof but only with the use of De Morgan's Laws - ju... | 5 | [
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-0.1... | 28,214 | 28214 | |
Characterizing the Relative Spatial Structure of Point Patterns
International Journal of Ecology
Volume 2012 (2012), Article ID 619281, 11 pages
http://dx.doi.org/10.1155/2012/619281
Research Article
Characterizing the Relative Spatial Structure of Point Patterns
^1AgroParisTech, UMR EcoFoG, BP 709, 97310 Kourou, Fr... | 4 | [
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Tilted Bianchi Type IX Dust Fluid Cosmological Model in General Relativity
ISRN Astronomy and Astrophysics
Volume 2012 (2012), Article ID 954043, 5 pages
http://dx.doi.org/10.5402/2012/954043
Research Article
Tilted Bianchi Type IX Dust Fluid Cosmological Model in General Relativity
Department of Mathematics, Jaipur... | 4 | [
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Integral Word Problem
November 24th 2009, 10:02 PM #1
Newbie
Joined
Nov 2009
Posts
19
Integral Word Problem
A rumor is spread in a school. For 0<a<1 and b>0, the time t at which a fraction p of the school population has heard the rumor is given by
(a) Evaluate the integral to find an explicit formu... | 5 | [
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Adding Vectors Using The Component Method
Adding Vectors Using The Component Method
by
... | 4 | [
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Quadratic Model
February 16th 2009, 08:59 PM
rebak
Quadratic Model
For this function $h(t)=10-4t^2$ how do you determine what time interval the ball will be more than 40 feet in the air?
February 16th 2009, 11:37 PM
earboth
Quote:
There must be a typo!
The graph of the given function is a parab... | 4 | [
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Domain question
October 4th 2012, 04:27 PM #1
Member
Joined
May 2012
From
Toronto
Posts
240
Thanks
1
Domain question
$f(x)=(5x+sqrt(x^2+2x))/4+x$
I figure that the domain can't include -4 and $x^2+2$ is greater than or equal to zero
working from there I get
$x^2+2x$, is greater th... | 4 | [
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Problems on H.C.F and L.C.M -
Read more:
"Nothing is impossible to a willing heart."
- (Proverb)
3. Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ?
[A]. 4 [B]. 10
[C]. 15 [D]. 16
Answer:... | 4 | [
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-0.080... | 28,221 | 28221 | |
Antiderivatives
November 26th 2007, 06:02 PM #1
Member
Joined
Nov 2007
Posts
112
Antiderivatives
Find the general antiderivative of the function below.
P(t) =
Find the general antiderivative of the function below.
F(t) =
Find the general antiderivative of f(x) = 6x.
F(x) =
... | 4 | [
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Finding Derivative, Moment Generating Function
October 23rd 2011, 01:34 PM
Relmiw
Finding Derivative, Moment Generating Function
I think I'm doing this wrong, but I can't see where. Y is a random variable.
m'(t) = Expected Value (50 * e^(t*50) + 0.01 * Y * e^(t*0.01*Y))
m''(t) = Expected Value (50^2 * ... | 5 | [
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0.010803... | 28,223 | 28223 | |
Can anyone help me with this Trig Identity double angle question?
December 26th 2010, 09:26 PM
solarflare
Can anyone help me with this Trig Identity double angle question?
Hi guys I am having real difficulty cracking this tri identity.
square root 2 sin (theta- pi/4) = sin theta - cos theta
I have atte... | 4 | [
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some one check my trig!!
August 6th 2010, 11:51 AM #1
Junior Member
Joined
Aug 2010
Posts
49
some one check my trig!!
so there's a right triangle
90 degrees in the bottom left
30 degrees bottom right
15 in length
unknown adjacent
unknown hypotenuse
so i did sin(30) = 15/b
15/s... | 4 | [
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... | 28,225 | 28225 | |
Enhanced Symplectic Synchronization between Two Different Complex Chaotic Systems with Uncertain Parameters
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 193138, 12 pages
http://dx.doi.org/10.1155/2013/193138
Research Article
Enhanced Symplectic Synchronization between Two Different Complex Chaotic Sys... | 5 | [
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-0.0539... | 28,226 | 28226 | |
Confidence interval
October 8th 2008, 06:59 AM #1
Newbie
Joined
Sep 2008
Posts
23
Confidence interval
Suppose that a random variable Y has a gamma distribution w. parameters $\alpha = 2$ and an unknown $\beta$. We have earlier proved that $2Y/\beta$ has a chi-square distribution w. 4 df. Using
$2Y/\... | 5 | [
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0.01275634765625,
0.0908203125,
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A Dependent Hidden Markov Model of Credit Quality
International Journal of Stochastic Analysis
Volume 2012 (2012), Article ID 719237, 13 pages
http://dx.doi.org/10.1155/2012/719237
Research Article
A Dependent Hidden Markov Model of Credit Quality
Centre for Industrial and Applied Mathematics, School of Mathematics ... | 4 | [
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The Convergent Behavior for Parametric Generalized Vector Equilibrium Problems
Journal of Applied Mathematics
Volume 2012 (2012), Article ID 183040, 12 pages
http://dx.doi.org/10.1155/2012/183040
Research Article
The Convergent Behavior for Parametric Generalized Vector Equilibrium Problems
^1Department of Occupatio... | 5 | [
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Matrix Exponentiation and the Frank-Kamenetskii Equation
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 713798, 14 pages
http://dx.doi.org/10.1155/2012/713798
Research Article
Matrix Exponentiation and the Frank-Kamenetskii Equation
Centre for Differential Equations, Continuum Mechanics and Appl... | 5 | [
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trig transformation
April 28th 2009, 07:18 PM #1
Newbie
Joined
Apr 2009
Posts
1
trig transformation
hello, i need help with this particular transformation, I was just wondering if my answer is correct
the transformation is this f(x) = 3 cos 2 (x - π/4) + 1 it asks me to find the period, amplitude, p... | 4 | [
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Homework Help
Posted by Edward on Sunday, April 8, 2007 at 5:10pm.
hollis is paying off 2 student loans. One loan charges 7% interest, per year. The other loan charges 9 % interest per year. He owes $1500 more on the 7% loan than he does on the other. Last year he
paid a total of $617.00 in interest. what does he owe ... | 4 | [
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-0.01470947265625... | 28,232 | 28232 | |
PDEs solvable as ODEs
November 22nd 2009, 05:02 PM #1
Newbie
Joined
Sep 2009
From
Michigan
Posts
20
PDEs solvable as ODEs
I have one remaining problem in this category that is tripping me up. The PDE is:
u sub y + 2yu = 0
solve for u = u(x,y)
Seems to me that this problem needs to be p... | 5 | [
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-0.06591796875... | 28,233 | 28233 | |
Earthquake Damage Assessment for RC Structures Based on Fuzzy Sets
Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 254865, 11 pages
http://dx.doi.org/10.1155/2013/254865
Research Article
Earthquake Damage Assessment for RC Structures Based on Fuzzy Sets
Beijing Key Lab of Earthquake Engineering a... | 4 | [
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Economic Analysis on Value Chain of Taxi Fleet with Battery-Swapping Mode Using Multiobjective Genetic Algorithm
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 175912, 15 pages
http://dx.doi.org/10.1155/2012/175912
Research Article
Economic Analysis on Value Chain of Taxi Fleet with Battery-Swapp... | 4 | [
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Research on the Fresh Agricultural Product Supply Chain Coordination with Supply Disruptions
Discrete Dynamics in Nature and Society
Volume 2013 (2013), Article ID 416790, 9 pages
http://dx.doi.org/10.1155/2013/416790
Research Article
Research on the Fresh Agricultural Product Supply Chain Coordination with Supply Di... | 5 | [
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Solving a congruence equation.
i have an equation say 22=(5x+8)mod26.how do i find x from this??please help me...
A slight variation on that: we want to solve 5x= 14 (mod 26). That is, 5x= 14+ 26y for some integer y. That is the same as the Diophantine equation 5x- 26y= 14. 5 divides into 26 5 times with
remainder 1. ... | 5 | [
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Homework Help
Posted by Bob on Wednesday, January 14, 2009 at 11:40am.
Find the equation of the line
With a slope of 2/3 that goes through the point (4, 5)
With a slope of (-1/3) that goes through the point (2, -4)
With a slope of 3 that goes through the point (-5, -1)
• algebra II - DrBob222, Wednesday, January... | 4 | [
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Simple Differentiation Question
January 23rd 2010, 09:49 PM #1
Newbie
Joined
Mar 2009
Posts
13
Simple Differentiation Question
Hi,
I've hit abit of a roadblock. I was wondering, how would I solve this (using the differntiation rules, not by first principles.) I can't see how to approach this. Could ... | 4 | [
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Complex numbers • /r/cheatatmathhomework
all 7 comments
[–]picado1 point2 points3 points
sorry, this has been archived and can no longer be voted on
In either case it's a system of two equations, one for the real part, one for the complex.
For the first 3x=5-2x, y-2=3y-8.
For the second
x^2-y^2 = 3
2xy = 4
Whic... | 4 | [
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Posts about The Hidden Game of Football on Code and Football
July 3, 2013
Adjusted yards per attempt 101: thinking in terms of a simple scoring model.
Posted by foodnearsnellville under Data, Football, Statistics | Tags: adjusted yards per attempt, expected points, Pro Football Reference, scoring model, scoring model... | 4 | [
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[11/12/13] Challenge #135 [Intermediate] De Morgan's Law • /r/dailyprogrammer
[11/12/13] Challenge #135 [Intermediate] De Morgan's Law (self.dailyprogrammer)
submitted by nint221 2
sorry, this has been archived and can no longer be voted on
(Intermediate): De Morgan's Law
De Morgan's Law is a neat law of Boolean p... | 5 | [
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use the square root property
$(x+20)^2 = 49$ We can square root both sides. If $x^2 = a$, then $|x| = \sqrt {a}$. NOT $x = \sqrt {a}$ !! So, $(x+20)^2 = 49$ $|x+20| = \sqrt{49}$ $|x+20| = 7$ $x+20 = +7$ and $x+20 = -7$ $x+20 =
+7$ $x = -13$ $x+20 = -7$ $x = -27$ $x = \{-27,-13\}$
| 4 | [
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determinantial equation is an equation for the plane though three noncollin pts.
February 26th 2013, 10:46 AM #1
Junior Member
Joined
Feb 2013
From
Calgary
Posts
58
determinantial equation is an equation for the plane though three noncollin pts.
I was given this question for hw and I am pretty confus... | 5 | [
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open mapping theorem
April 15th 2006, 01:21 AM #1
Newbie
Joined
Apr 2006
Posts
20
open mapping theorem
Hi
this is rosana
I need your help as soon as you can
I need the explaination to proof of open mapping theorem( letT be a continuous linear operator on an F-spaceX onto an F-space Y. then T ... | 5 | [
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Math Help
May 19th 2008, 01:58 PM #1
Newbie
Joined
May 2008
Posts
3
Orthocenter
Heres the problem : Given triangle RST, with R= (-3,2), S=(4,5) , T= (7,-2), find the cords of the orthocenter.
I have no idea what to do, my teacher gave this to us and im confused..
thanks (:
Woah, I am on t... | 4 | [
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Help with proof with greatest integer function
November 15th 2009, 08:46 AM #1
Newbie
Joined
Nov 2009
Posts
7
Help with proof with greatest integer function
I'm having a hard time with this proof:
Show that if a and b are positive integers then
$\sum_{i = 1}^{[a/2]} [\frac{ib}{a}] + \sum_{j = 1}^... | 5 | [
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CRAPS ... A CASINO GAME OF PURE CHANCE
Sanderson M. Smith
Home | About Sanderson Smith | Writin... | 4 | [
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A French Week
December 16th 2007, 10:40 PM #1
A French Week
For about 10 years after the French Revolution, the French government attempted to base measures of time on multiple of ten: One week consisted of 10 days, one day consisted of 10 hours, one hour
consisted of 100 minutes, and one minute consisted of ... | 4 | [
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HELPPPPP!!! Hyperpola and Ellipse word problem
December 7th 2008, 07:18 AM #1
Newbie
Joined
Dec 2008
Posts
11
(1) A hyperbolic reflector for a radiotelescope has the equation :
y^2/900-x^2/225=1.
If the reflector has a diameter of 20 feet, how deep is it (in feet)?
(2)A nuclear cooling tower ... | 4 | [
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Optimal Control of a Delay-Varying Computer Virus Propagation Model
Discrete Dynamics in Nature and Society
Volume 2013 (2013), Article ID 210291, 7 pages
http://dx.doi.org/10.1155/2013/210291
Research Article
Optimal Control of a Delay-Varying Computer Virus Propagation Model
^1College of Computer, Jiangsu Normal U... | 4 | [
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Probabilty: Some Answers That Need Checking Part 2
February 7th 2009, 11:36 AM
stmsnyder1
Probabilty: Some Answers That Need Checking Part 2
Hi,
If anyone can please check what I have done, that would be awesome,
70. Cross Country: There are three schools competing in a cross country race. School A ha... | 4 | [
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Help Find Slope :)
November 14th 2007, 12:53 PM #1
Junior Member
Joined
Nov 2007
From
Canada!
Posts
30
Help Find Slope :)
hey i know this is not the right page but whatever... i'm really horrible at math and i have a big test tomorrow
Find the slope of the line that goes through each pair of poi... | 4 | [
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Inverse Laplace Transformation
January 24th 2011, 01:55 PM #1
Newbie
Joined
Jan 2011
Posts
5
Inverse Laplace Transformation
Hello MHF members,
If anyone can, help me sort this out... I have worked on Laplace and inverse Laplace transformations before through the table and that was fine.
Problem... | 5 | [
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0... | 28,254 | 28254 | |
The Fractional S-Transform on Spaces of Type
Journal of Mathematics
Volume 2013 (2013), Article ID 105848, 9 pages
http://dx.doi.org/10.1155/2013/105848
Research Article
The Fractional S-Transform on Spaces of Type
Department of Mathematics, Rajiv Gandhi University, Doimukh, Arunachal Pradesh 791112, India
Received... | 4 | [
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0.0106201171875,
-0.0712890625,
-0.0242919921875,
0.05419921875,... | 28,255 | 28255 | |
Nonlinear Radon Transform Using Zernike Moment for Shape Analysis
Computational and Mathematical Methods in Medicine
Volume 2013 (2013), Article ID 208402, 9 pages
http://dx.doi.org/10.1155/2013/208402
Research Article
Nonlinear Radon Transform Using Zernike Moment for Shape Analysis
^1School of Information and Tech... | 4 | [
-0.0927734375,
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0.050048828125,
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Michaelis-Menten theory
Biochemical reactions are typically catalysed by enzymes. A common feature of these reactions is that the initial concentration of the enzyme is much smaller than that of the substrate. Their ratio
defines a small dimensionless constant $\epsilon$. A model for the simplest type of reaction of t... | 4 | [
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Help with this conditional PMF question
February 28th 2011, 11:18 AM #1
Newbie
Joined
Sep 2010
Posts
19
Help with this conditional PMF question
Hi,
This is one of the past questions from the entrance exam for the graduate school.
I think I know the answer but I would welcome help with the author... | 5 | [
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Nested Interval Property (NIP) implies Least Upper Bound propery (LUB)
December 7th 2008, 08:03 PM #1
Newbie
Joined
Dec 2008
Posts
8
Nested Interval Property (NIP) implies Least Upper Bound propery (LUB)
I'm stuck in proving this. I get that we can set up the sequence of nested intervals by starting with... | 4 | [
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... | 28,259 | 28259 | |
Proof using linearly independent
April 17th 2013, 04:06 PM
widenerl194
Proof using linearly independent
I'm not sure where to start with this: (these are all matrices -- are supposed to have bars over them, but couldn't figure out how to insert those)
Prove that if {w, x, y, z} is a linearly dependent subse... | 5 | [
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simultaneous equations
May 25th 2008, 08:39 PM
Xelax
simultaneous equations
Can someone please help me with these two.
1." A total of 12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly interest is $1,180, how much of the 12,000 is invested at each rate? USE A MATRIX METHOD TO ... | 4 | [
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-0.03857... | 28,261 | 28261 | |
Math Help
April 30th 2009, 06:23 AM #1
Member
Joined
Oct 2008
Posts
156
open cover
Suppose that a metric space $X$ has a countable dense cover $Q$. Show that any open cover of $X$ has a subcover which is at most countable.
So consider an arbitrary cover of $X$$, \{U_{\alpha}: \alpha \in A \}$. Let ... | 5 | [
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Improper Riemann Integral
Does the integral $\int\limits_{0}^{1} \frac{\log{x}}{1-x^{2}}$ converge where $x \in [0,1]$.
Last edited by Krizalid; March 2nd 2010 at 06:01 AM.
I don't undestand what needs further demostration... ... may be this step?... $\int_{0}^{1} x^{n}\cdot \ln x \cdot dx = -\frac {1}{(n+1)^{2}}$ (1... | 5 | [
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Mathematical Induction
November 21st 2009, 12:09 PM #1
Mathematical Induction
Can anyone verify whether the following proof is correct or incorrect? If incorrect please explain where and why I went wrong?
Use mathematical induction to show that given a set of n+1 positive integers, none exceeding 2n, there i... | 4 | [
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0.02502441... | 28,264 | 28264 | |
Integral question
February 23rd 2010, 02:32 PM #1
Member
Joined
Oct 2009
Posts
229
Integral question
Consider the function
Let
Then
I'm guessing you have to find the antiderivative, then find C and then evaluate the antiderivative with 4 as your x input.
For the antiderivative I ended u... | 5 | [
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0.0172119140625,
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... | 28,265 | 28265 | |
Completing the Square
April 21st 2013, 10:32 AM
gramgilb
Completing the Square
Hey i am attempting to CTS 4x^2 +24x-18=0
i divide by four to make the a coefficient zero but then get lost at the 18/4 and dont know what do with that.
Any help is appreciated
April 21st 2013, 10:36 AM
dokrbb
Re: Complet... | 4 | [
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Resolving a vector into a sum of two vectors
April 6th 2011, 05:25 AM
cottontails
Resolving a vector into a sum of two vectors
"Resolve the vector u = 5i + j + 6k into a sum of two vectors, one of which is parallel and the other perpendicular to v = 3i - 6j + 2k."
What I want to know with this question is h... | 5 | [
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0.1... | 28,267 | 28267 | |
Generalized Stability of Euler-Lagrange Quadratic Functional Equation
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 219435, 16 pages
http://dx.doi.org/10.1155/2012/219435
Research Article
Generalized Stability of Euler-Lagrange Quadratic Functional Equation
Department of Mathematics, Chungnam National... | 5 | [
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Urgent help for statistics please!
30% of chicken is contaminated, if a person buys 12, what's the possibility that 6 of them are contaminated? thanks
Hi Let X be the random variable which counts the number of chickens contaminated out of 12. X follows a binomial distribution (with parameters n=12 and p=0.30) because ... | 4 | [
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long complicated integral.
April 20th 2009, 12:00 PM
gammaman
long complicated integral.
Does anyone know any shortcut to solve the following integral? As it stands the only way I know how to do it is to first use polynomial long division and then use integration with partial
fractions. It is not necessarily... | 5 | [
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0.0805... | 28,270 | 28270 | |
parameterize curve of intersection
October 11th 2009, 02:07 PM #1
Senior Member
Joined
Jun 2009
Posts
251
parameterize curve of intersection
Ellipsoid has equation $x^2+y^2-yz+z^2=1$
It fits inside a cylinder, which if I did the math correctly, is $x^2+y^2-\frac{y^2}{2}+\frac{y^2}{4}=1$ Parameterize ... | 4 | [
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0.03125,
-0.01385498046875,
-0.0786132... | 28,271 | 28271 | |
An Indoor Mobile Localization Strategy for Robot in NLOS Environment
International Journal of Distributed Sensor Networks
Volume 2013 (2013), Article ID 758749, 8 pages
http://dx.doi.org/10.1155/2013/758749
Research Article
An Indoor Mobile Localization Strategy for Robot in NLOS Environment
The School of Informatio... | 4 | [
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0.044921875,
-0... | 28,272 | 28272 | |
Dimension area problem
October 31st 2009, 08:54 PM #1
Newbie
Joined
Sep 2008
Posts
16
Dimension area problem
Hey Guys!
I have a calculus problem here :
A book with cover dimensions 5in * 7in is to be placed symmetrically in a diamond-shaped gift box. What's the smallest possible area of the bo... | 5 | [
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A Pipelined and Parallel Architecture for Quantum Monte Carlo Simulations on FPGAs
VLSI Design
Volume 2010 (2010), Article ID 946486, 8 pages
http://dx.doi.org/10.1155/2010/946486
Research Article
A Pipelined and Parallel Architecture for Quantum Monte Carlo Simulations on FPGAs
^1Department of Electrical Engineerin... | 4 | [
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0.062011... | 28,274 | 28274 | |
Help with "Rotating body" and with optimizing problem.
February 14th 2011, 06:58 AM #1
Newbie
Joined
Feb 2011
Posts
6
Help with "Rotating body" and with optimizing problem.
Hi, first I have to thank you guys for the help, I relly appreciate it.
I got two questions, and I have tried and got some resul... | 5 | [
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0.0495605... | 28,275 | 28275 | |
Performance Evaluation of Some Distributed Averaging Algorithms for Sensor Networks
International Journal of Distributed Sensor Networks
Volume 2011 (2011), Article ID 428290, 11 pages
http://dx.doi.org/10.1155/2011/428290
Research Article
Performance Evaluation of Some Distributed Averaging Algorithms for Sensor Net... | 4 | [
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0.050537109375,
0.... | 28,276 | 28276 | |
Asymptotic Stability and Exponential Stability of Impulsive Delayed Hopfield Neural Networks
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 638496, 10 pages
http://dx.doi.org/10.1155/2013/638496
Research Article
Asymptotic Stability and Exponential Stability of Impulsive Delayed Hopfield Neural Networks... | 5 | [
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-0.0250244140625,
-0.02... | 28,277 | 28277 | |
Instability Induced by Cross-Diffusion in a Predator-Prey Model with Sex Structure
Journal of Applied Mathematics
Volume 2012 (2012), Article ID 240432, 18 pages
http://dx.doi.org/10.1155/2012/240432
Research Article
Instability Induced by Cross-Diffusion in a Predator-Prey Model with Sex Structure
Department of Mat... | 5 | [
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... | 28,278 | 28278 | |
Herstein's Famous Problem
November 1st 2007, 05:17 PM
ThePerfectHacker
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 subgroups of orders $n$ and $m$ then it has a subgroup of order $\mbox{lcm}(... | 5 | [
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... | 28,279 | 28279 | |
[SOLVED] Find DE given slope and point?
March 14th 2009, 10:50 AM #1
[SOLVED] Find DE given slope and point?
Find the equation of the curve that passes thru the point (0,1) & whose slope at (x,y) is 13xy.
I'm not sure how to start this. Can someone get me started without doing the whole prob?
Thanks
... | 5 | [
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0.0042724609375,
-0.14453125,
-0.011169433... | 28,280 | 28280 | |
MIMO OTA Testing Based on Transmit Signal Processing
International Journal of Antennas and Propagation
Volume 2013 (2013), Article ID 670154, 7 pages
http://dx.doi.org/10.1155/2013/670154
Research Article
MIMO OTA Testing Based on Transmit Signal Processing
Department of Communications Engineering, University of Can... | 4 | [
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0.006... | 28,281 | 28281 | |
Can this be solved with this info?
March 21st 2008, 04:03 PM
Twig
Can this be solved with this info?
Hi!
I read this problem in yesterday and I bothers me that I cant put up an equation on how to solve it.
A bunch of people were going to ride a rollercoaster.
A childrens ticket was $15, and an adul... | 5 | [
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Clarification on the Quotient Rule
November 18th 2009, 02:17 PM #1
Junior Member
Joined
Oct 2009
From
Bloomington, IN
Posts
29
Clarification on the Quotient Rule
Hello, and thanks for your help in advance.
I recently learned the quotient rule in finding the derivative of more complicated express... | 5 | [
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0.029296875,
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factorising polynomial
April 9th 2010, 07:15 AM #1
Member
Joined
Apr 2010
Posts
135
factorising polynomial
i am given a question to show that $x^4-a^4= (x+a)(x^2+a^2)$
hence factorise $x^4-4=$ and find the roots of the equation..
i have used the binomial expansion theorem to prove the first pa... | 4 | [
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-0.018554687... | 28,284 | 28284 | |
Geometric Progression
December 20th 2009, 09:08 PM #1
Senior Member
Joined
Jul 2009
From
Singapore
Posts
338
Geometric Progression
A man borrows a sum of money from a building society and agrees to pay the loan (plus interest) over a period of years. If $A is the sum borrowed and r% the yearly rate o... | 4 | [
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-0.10... | 28,285 | 28285 | |
Complexity based proof of infinitude of Primes
February 10th 2007, 01:29 PM #1
Grand Panjandrum
Joined
Nov 2005
From
someplace
Posts
14,972
Thanks
4
Complexity based proof of infinitude of Primes
In "Meta Math!" Greg Chaitin gives a sketch of a proof of the infinitude of primes based on complexit... | 4 | [
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PHYSICS 447
QUANTUM MECHANICS
Instructor: Purrington
Office: Stern 5050
email: danny@tulane.edu
TEXT: Griffiths, Introduction to Quantum Mechanics, 2nd ed.
TENTATIVE SYLLABUS/OUTLINE
Chapters 1-3, Griffiths []
Sections I-II:
I. Historical Overview--problems looming at the end of the 19th century; early... | 4 | [
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-0.0673828125,... | 28,287 | 28287 | |
Modeling of Lightning Strokes Using Two-Peaked Channel-Base Currents
International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 318417, 7 pages
http://dx.doi.org/10.1155/2012/318417
Research Article
Modeling of Lightning Strokes Using Two-Peaked Channel-Base Currents
Faculty of Electronic Engin... | 4 | [
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0.01611328125,
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... | 28,288 | 28288 | |
Inequalities and Surds - dying of confusion over this question.
September 19th 2010, 12:34 PM #1
Newbie
Joined
Sep 2010
Posts
4
Thanks
1
Hi, I've been staring at this question on my 'homework' sheet for ages, and after... So long, I decided I need help. If possible, could someone solve the question an... | 4 | [
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... | 28,289 | 28289 | |
Extended Tolerance Relation to Define a New Rough Set Model in Incomplete Information Systems
Advances in Fuzzy Systems
Volume 2013 (2013), Article ID 372091, 10 pages
http://dx.doi.org/10.1155/2013/372091
Research Article
Extended Tolerance Relation to Define a New Rough Set Model in Incomplete Information Systems
... | 4 | [
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-0.10... | 28,290 | 28290 | |
Power series - Differential equation
March 26th 2011, 01:08 AM
Mondreus
Power series - Differential equation
Seek the solutions that are power series to the differential equation:
$(1-z)f'(z)=2f(z),\ f(0)=1$
I assume we first need to assume that $|z|<R$ so that $f(z)=\sum_{n=0}^{\infty}c_nz^n$ can be di... | 5 | [
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-0.03857421875,
-0.08... | 28,291 | 28291 | |
Angle in a triangle
June 4th 2010, 06:20 AM #1
Angle in a triangle
The length of the sides of a triangle are 4.2, 5.3 and 7.6.
Calculate the size of the largest angle of the triangle to 1 dp.
How would I know this without calculating the area using 1/2 a b sin(c)????
use the law of cosines ...
... | 4 | [
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-0.00537109375,
-0.030151367... | 28,292 | 28292 | |
Math Help
January 1st 2008, 03:25 PM #1
Series
Show that, for all $\theta \in \mathbb{R}$,
$\frac{cos\theta}{2} + \frac{cos3\theta}{2^2} + \frac{cos5\theta}{2^3} + \ldots = \frac{cos\theta}{1 + 8sin^2\theta}$.
I understand that this has something to do with a geometric series however taking $\frac{a_2}... | 5 | [
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-0.058837890625,
-0.0157... | 28,293 | 28293 | |
Need help with indefinite integral
I am pretty sure I need to use integration by parts, but I cannot get anywhere with this. $\int 2x^3\cos(x^2)\,dx$
Hello, First substitute $u=x^2$ and then use once an integration by parts.
You could try a substitution first... Let $w = x^2$, $dw = 2x ~dx$ Your integral becomes: $\i... | 5 | [
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0.017333984375... | 28,294 | 28294 | |
Hyperbolic Cosine/Derivative question
October 21st 2009, 07:21 PM #1
Junior Member
Joined
Sep 2009
Posts
62
Hyperbolic Cosine/Derivative question
I don't even understand what this problem is asking, much less how to solve it. Any help would be appreciated!
Problem: The cable between two towers of ... | 5 | [
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-0.087890625,
-0.05... | 28,295 | 28295 | |
ratio of volumes
September 12th 2008, 11:31 AM
rmpatel5
ratio of volumes
Show that the ratio of the volumes of two similar pyramids
is equal to the ratio of the cubes of corresponding edges- not using modern
calculus,but by comparing magnitudes
September 12th 2008, 03:42 PM
ticbol
Pyramid.
V =... | 4 | [
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0.... | 28,296 | 28296 | |
A Class of Spectral Element Methods and Its A Priori/A Posteriori Error Estimates for 2nd-Order Elliptic Eigenvalue Problems
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 262010, 14 pages
http://dx.doi.org/10.1155/2013/262010
Research Article
A Class of Spectral Element Methods and Its A Priori/A Pos... | 4 | [
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0.007019042... | 28,297 | 28297 | |
modular arithmetic help
May 9th 2011, 05:18 AM
Nguyen
modular arithmetic help
Hey everyone, I am finding these difficult and need some help solving these by hand.
1. $x \equiv 10^{100} \ mod \ 1001$, so I want the remainder of $\frac{10^{100}}{1001}$.
2. solve $26^{24} \equiv 1 \ (mod \ 35)$, so I am t... | 4 | [
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Prove some identities! (Round two)
And you thought it was over? Problem: Compute $\displaystyle \sum_{n=2}^{\infty}\left(\zeta(n)-1\right)$ , $\displaystyle \sum_{n=1}^{\infty}\left(\zeta(2n)-1\right)$ and, $\displaystyle \sum_{n=2}^
{\infty}\left(\zeta(2n-1)-1\right)$
Cool ones! $\displaystyle{<br /> \sum_{n=2}^\inft... | 5 | [
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