content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
A Study on the Performance of Classical Clustering Algorithms with Uncertain Moving Object Data Sets
(IJCSIS) International Journal of Computer Science and Information Security,Vol. 9, No. 4,April, 2011
To study the performance of the clustering algorithms withuncertain moving object date sets, we have chosen K-means... | 4 | [
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0.... | 29,200 | 29200 | |
Compute the following limit (Use l'Hopital's rule)
[cos(a/x)]^(x^2) as x tends to infinity, where a > 0.
$L = \lim_{x \to \infty} \left[ \cos \left( \frac{a}{x} \right) \right]^{x^2}$ $\ln L = \lim_{x \to \infty} \ln \left[ \cos \left( \frac{a}{x} \right) \right]^{x^2}$ $\ln L = \lim_{x \to \infty} x^2
\ln \left[ \cos... | 4 | [
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search results
Expand all Collapse all Results 101 - 125 of 220
101. CJM 2007 (vol 59 pp. 1284)
On Effective Witt Decomposition and the Cartan--Dieudonn{é Theorem
Let $K$ be a number field, and let $F$ be a symmetric bilinear form in $2N$ variables over $K$. Let $Z$ be a subspace of $K^N$. A classical theore... | 4 | [
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0.020874... | 29,202 | 29202 | |
Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mechanisms
Modelling and Simulation in Engineering
Volume 2011 (2011), Article ID 934982, 15 pages
http://dx.doi.org/10.1155/2011/934982
Research Article
Implicit LES for Supersonic Microramp Vortex Generator: New Discoveries and New Mech... | 4 | [
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0.03002929... | 29,203 | 29203 | |
partial derivative...
March 9th 2009, 01:52 PM #1
Newbie
Joined
Mar 2009
Posts
5
partial derivative...
a)assume we have a cylinder ( with a top ) of height h and base radius r. if the top, bottom and wall costs per square meter are a, b and w dollars respectively, find the cost function K ( h, r,
a, ... | 4 | [
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0.... | 29,204 | 29204 | |
Complex Powers of Complex Numbers
March 15th 2011, 02:46 AM
littlea86
Complex Powers of Complex Numbers
Hey,
I have the complex number (-(root 3)+i)^i. and using complex number mathematics I have put the complex number into exponential form: 2^i * e^(-5pi/6).
However, this is not in exponential form as e... | 5 | [
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0.00093841552734375,
-0... | 29,205 | 29205 | |
Mean Value Theorem Proof
January 26th 2009, 03:39 PM
Larrioto
Mean Value Theorem Proof
Use the Mean Value Theorem to prove that for all a,b that belongs to the reel, we have :
$|sin(b)-sin(a)|$$\leq$$| b-a |$
January 26th 2009, 04:03 PM
NonCommAlg
Quote:
well, if you let $f(x)=\sin x,$ then by ... | 5 | [
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A rectangle is inscribed in a circle of radius r. If the
Author Message
TAGS:
A rectangle is inscribed in a circle of radius r. If the [#permalink] 16 May 2012, 06:44
... | 4 | [
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Logarithms Question
October 25th 2007, 11:41 PM
haku
Logarithms Question
Can anyone please help me in doing the following question:
Given that x^2 + y^2 = 6xy, find an equivalent expression to 2 log(x+y).
Thanks any help will be greatly appreciated. :confused:
October 25th 2007, 11:51 PM
ticbol
... | 4 | [
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Relativistic Spinning Particle without Grassmann Variables and the Dirac Equation
Advances in Mathematical Physics
Volume 2011 (2011), Article ID 680367, 10 pages
http://dx.doi.org/10.1155/2011/680367
Research Article
Relativistic Spinning Particle without Grassmann Variables and the Dirac Equation
Departamento de M... | 4 | [
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Interpolation - Monomial Basis (code and example)
We have seen how easy it is to come up with a interpolating polynomial in the monomial basis. The technique does however have some downfalls.
The simple code attached allows you to play around with this kind of interpolation. You must define the interval, function and i... | 4 | [
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Pan Balance Equations
March 30th 2010, 06:52 PM #1
Newbie
Joined
Mar 2010
Posts
9
Pan Balance Equations
Help!
There are two pan balances, the first pan balance has 2 full juice boxes on the left side and on the right side are 18 grapes along with a half-full juice box. The pan balance is equal.
... | 4 | [
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the encyclopedic entry of third quantum number
The
Azimuthal quantum number
(or
orbital angular momentum quantum number
,
second quantum number
) symbolized as
l
(lower-case L) is a
quantum number
for an
atomic orbital
that determines its orbital
angular momentum
. The azimuthal quantum number is the seco... | 4 | [
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Values of A and B in Limit
July 22nd 2012, 03:35 PM #1
Newbie
Joined
Jul 2012
From
Alaska
Posts
13
Values of A and B in Limit
This is the last problem on a take home quiz I was given. I keep staring at it, but I'm not really even sure how to start.
Determine all possible values of $a$ and $b$ if... | 5 | [
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... | 29,213 | 29213 | |
[SOLVED] Help finding f(x)'.... THX!
January 29th 2010, 07:01 PM #1
Newbie
Joined
Jan 2010
Posts
6
[SOLVED] Help finding f(x)'.... THX!
Can someone give me a hint with this problem?
The problem is:
(tan x)^(arctan x)
I was trying to use:
Dx (a)^u = (a)^u * ln(a) * Dx u
I am getting... | 5 | [
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Sum of an infinite series
May 11th 2010, 12:04 PM
edmo
Sum of an infinite series
Hi I'm stuck on a question, and sadly my coursebook is actually missing the pages I need due to a printing error.
The question reads-
Find the sum of the infinite series:
(5/6)^3 - (5/6)^4 + (5/6)^5 - (5/6) ^ 6 ...
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Derive a power reduction formula
February 6th 2011, 03:28 PM #1
Junior Member
Joined
Jun 2010
Posts
44
Derive a power reduction formula
Hi all... I've been working on a problem for the past several hours and haven't had much luck solving it...
I'm trying to derive this formula (for n>2):
$\[\in... | 5 | [
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Vectors in R3 ---- how to approach this problem
October 10th 2010, 04:41 PM
nikcs123
Vectors in R3 ---- how to approach this problem
(a) Given a general (not necessarily rectangular) tetrahedron, let $V_{1}, V_{2}, V_{3}, V_{4}$ denote vectors whose lengths are equal to the areas of the four faces, and whose dir... | 5 | [
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True false question probability
October 4th 2009, 08:43 PM
rax012
True false question probability
Hello to all,
I have an question that "In 20 questions of true false student require 8 right answer to pass to passout. What is the probability that student will fails?"
Please help me to solve this.
Thn... | 4 | [
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Stability Analysis of Vehicle Negotiating a Curve in the Plane
Advances in Mechanical Engineering
Volume 2013 (2013), Article ID 893835, 9 pages
http://dx.doi.org/10.1155/2013/893835
Research Article
Stability Analysis of Vehicle Negotiating a Curve in the Plane
^1College of Transportation, Jilin University, Changch... | 4 | [
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exponential integral
July 18th 2010, 02:37 AM
abotaha
exponential integral
Dear all,
I have exponential integral with polynomial. I tried to solve it but I could not (Crying).
the integration is :
$\int_{-\infty}^{\infty} (ax^2+bx+c) e^{ax^2+bx+c} dx$
Can any one help me please.
Thanks in ... | 4 | [
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Find the general relationship between coordinates
September 16th 2012, 08:11 AM #1
Member
Joined
Jan 2011
Posts
83
Find the general relationship between coordinates
Hi, this is the question from My book, i Will show
My progress aswell
Problem: A vector u has got the coordinates
(1,2) in Two ... | 5 | [
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Okay simple question about the populationstandard deviation
March 12th 2011, 06:03 PM #1
Newbie
Joined
Mar 2011
Posts
14
Okay simple question about the populationstandard deviation
I have the following: the expected value and the variance of a PDF.
I am running 3 simulations with n=10,n=20, and n=30... | 4 | [
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word problem
January 3rd 2008, 09:42 AM #1
Newbie
Joined
Jan 2008
Posts
12
word problem
I can't figure out how to write this problem out, so that I can solve it. Here it is: Three times a certain number is as much less than 55 as 4 times the number exceeds 50. What is the number?
Can someone help me ... | 4 | [
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Quadratic inequality
April 8th 2011, 12:41 PM #1
Newbie
Joined
Mar 2011
Posts
7
Quadratic inequality
x^2 +2x -3>0
I don't understand when to use the union symbol After using my three test points. i know the answer is (x-1)(x+3) so x = -3 X= 1
Yes but kneed to understand the rule you use in findi... | 4 | [
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Algebra, Problems For Fun (19)
June 18th 2009, 05:51 AM #1
MHF Contributor
Joined
May 2008
Posts
2,295
Thanks
7
Algebra, Problems For Fun (19)
A standard notation: By $M_n(R)$ we mean the set of all $n \times n$ matrices with entries from some set $R.$
Problem: Let $A \in M_n(\mathbb{C}).$ Supp... | 5 | [
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0.015625,
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0.04125... | 29,225 | 29225 | |
Exact differential.
Is this $\left(1 + \frac{e^x}{y}\right)\,dx + \frac{e^x}{y}\left(1 - \frac{x}{y}\right)\,dy = 0$ or $\left(1 + e^{\frac{x}{y}}\right)\,dx + e^{\frac{x}{y}}\left(1 - \frac{x}{y}\right)\,dy = 0$?
$\displaystyle{\left(1 + e^{\frac{x}{y}}\right)\,dx + e^{\frac{x}{y}}\left(1 - \frac{x}{y}\right)\,dy = 0... | 5 | [
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Gauss-Jordan Reduction
April 3rd 2011, 05:40 PM #1
Member
Joined
Jul 2008
Posts
212
Gauss-Jordan Reduction
Solve the following set of homogeneous equations by Gauss-Jordan reduction of the matrix of coefficients (without the column of zeros from the right-hand side.
5x+5y-5z=0
3x+4y-7z=0
2y-... | 4 | [
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0.016845703125,
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-0.... | 29,227 | 29227 | |
Pesquisa Operacional
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Print version ISSN 0101-7438
Pesqui. Oper. vol.32 no.1 Rio de Janeiro Jan./Apr. 2012 Epub Mar 08, 2012
http://dx.doi.org/10.1590/S0101-74382012005000002
Clusters and pivots for evaluating a large numberof alternatives in AHP
Alessi... | 4 | [
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0.0830078125,
-0.0... | 29,228 | 29228 | |
Calculus Integration problem. NO clue
March 11th 2008, 07:15 PM #1
Newbie
Joined
Mar 2008
Posts
3
Calculus Integration problem. NO clue
Question is as follows :
Let f be the function satisfying f ' (x) = -3xf(x) for all real numbers x, with f(1) = 4 and lim as x -> infinity of f(x) = 0.
a.) Eva... | 5 | [
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-0.009765625,
0.005218505859375,
-0.0419921875,
-0.... | 29,229 | 29229 | |
On the Stability Problem in Fuzzy Banach Space
Abstract and Applied Analysis
Volume 2012 (2012), Article ID 763728, 14 pages
http://dx.doi.org/10.1155/2012/763728
Research Article
On the Stability Problem in Fuzzy Banach Space
^1Faculty of Mathematical Sciences, University of Tabriz, Tabriz, Iran
^2Department of Mat... | 5 | [
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-0.13183593... | 29,230 | 29230 | |
Prove this hardest thing
June 25th 2009, 07:13 PM
jashansinghal
Prove this hardest thing
Prove that--
{(3+2*5^1/4) ÷ (3-2*5^1/4)}^1/4=( 5^1/4 +1) ÷ ( 5^1/4 -1)
If you cannot understand it ,can u teach me how to write it using mathematical signs.
But for the time being prove it......
It is simply ... | 5 | [
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0.048828125,
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0.003875732421875,
-0.0... | 29,231 | 29231 | |
Factorials & Other Stuff
September 9th 2006, 07:14 PM
StackFryer
Factorials & Other Stuff
Hi there, I need some help with these questions please:
_______________________________________
Find the first 5 terms of the sequence:
tn=2^tn-1, t1=0 (I think I know this one, I just need some confirmation)
... | 4 | [
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... | 29,232 | 29232 | |
Current Mode Biquad Filter with Minimum Component Count
Active and Passive Electronic Components
Volume 2011 (2011), Article ID 391642, 7 pages
http://dx.doi.org/10.1155/2011/391642
Research Article
Current Mode Biquad Filter with Minimum Component Count
Department of Electronics Engineering, Z. H. College of Engine... | 4 | [
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-0.0441... | 29,233 | 29233 | |
Half Line Wave Equation
October 28th 2007, 05:07 PM
tbyou87
Half Line Wave Equation
Hi,
Solve $\ \ \ \frac{\partial{u}}{\partial{t}} = k(\frac{\partial^2{u}}{\partial{t}^2}) \ \ \ \ \ \ \ u(x,0) = e^{-x} \ \ \ \ \ \ \ \ u(0,t) = 0 \ \ \ \ \$ on the half line $0<x<\infty$.
I know you are supposed to put... | 4 | [
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-0.1... | 29,234 | 29234 | |
ng
Narrow Search
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Per page:
Now showing results 1-9 of 9
This is an activity about measuring angular size and understanding the solar and lunar proportions that result in solar eclipses. Learners will use triangles and proportions to create a shoebox
eclipse simulator. ... | 4 | [
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0.080... | 29,235 | 29235 | |
Real Analysis stuff
December 10th 2007, 12:39 PM
musicmental85
Real Analysis stuff
Hi guys,
Still revising for exams! Looking at the following, any help would be appreciated!
Consider the function f_i=PC(2PI), i=1,2
f_1(x)=x f_2(x)=x^2 for 0<=x<2PI
Show that f_1(x) ~ PI- 2 SUM [(sin(nx))/n] (n... | 5 | [
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0.0277099609375,
-0.0520019531... | 29,236 | 29236 | |
Mean Value Theorem on indicated intervals
November 27th 2012, 07:48 PM
Chaim
Mean Value Theorem on indicated intervals
Just making sure if I got mean value theoroms,
Apply the Mean Value Theorem to f on the indicated interval, and find all values of c in the interval (a, b) such that: f'(c)=(f(b)-f(a))/(b-a)... | 5 | [
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Bicube / Bandaged Rubik's Cube
Links to other useful pages:
Uwe Meffert's pages
. He produces and sells many puzzles, including this one.
Description
The Bicube puzzle can be made from a standard Rubik's Cube by gluing pieces together. Seven of the corner pieces are glued to edges to make seven 2x1x1 movable piec... | 4 | [
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0.0177001... | 29,238 | 29238 | |
3D FE Analysis of an Embankment Construction on GRSC and Proposal of a Design Method
ISRN Civil Engineering
Volume 2013 (2013), Article ID 348973, 11 pages
http://dx.doi.org/10.1155/2013/348973
Research Article
3D FE Analysis of an Embankment Construction on GRSC and Proposal of a Design Method
Applied Mechanics Dep... | 4 | [
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Dynamics Model Abstraction Scheme Using Radial Basis Functions
Journal of Control Science and Engineering
Volume 2012 (2012), Article ID 761019, 11 pages
http://dx.doi.org/10.1155/2012/761019
Research Article
Dynamics Model Abstraction Scheme Using Radial Basis Functions
^1Department of Computer Architecture and Tec... | 4 | [
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0.01745... | 29,240 | 29240 | |
A Convex Adaptive Total Variation Model Based on the Gray Level Indicator for Multiplicative Noise Removal
Abstract and Applied Analysis
Volume 2013 (2013), Article ID 912373, 21 pages
http://dx.doi.org/10.1155/2013/912373
Research Article
A Convex Adaptive Total Variation Model Based on the Gray Level Indicator for ... | 4 | [
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0.04565429... | 29,241 | 29241 | |
Find the slope of the tangent to the curve
September 26th 2009, 07:31 PM #1
Super Member
Joined
Nov 2008
Posts
597
Find the slope of the tangent to the curve
Find the slope of the tangent to the curve
y = 3 + 4x^2 - 2x^3
at the point where x = a.
Answer: 8a - 6a^2
I have no idea how t... | 4 | [
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-0.010... | 29,242 | 29242 | |
Identical Champions League Draw: What Were the Odds?
December 24, 2012
By diffuseprior
A number of news outlets have reported a peculiar quirk that arose during Friday’s Champions League draw. Apparently, the sport’s European governing body, UEFA, ran a trial run the day before the
main event, and the schedule chos... | 5 | [
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Simplification Of Floor and Ceiling functions..
April 27th 2009, 10:29 PM #1
Newbie
Joined
Apr 2009
Posts
6
Simplification Of Floor and Ceiling functions..
Not sure if this is the right place to post, but here goes...
We have been asked to deduce an expression given certain constraints. Now I have d... | 5 | [
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Evaluate this sum.
$\frac{1}{(3n+2)(4n+3)}=\frac{3(4n+3)-4(3n+2)}{(3n+2)(4n+3)}=\frac{3}{3n+2}-\frac{4}{4n+3},$ now use $\frac1{n+1}=\int_0^1x^n\,dx$ and the expansion for the geometric series. Solve the remaining
integral. (By the way, the general term changes because the series starts from $n=0.$)
| 4 | [
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double angle formula
how do you express sinh(x) in the form of t= tanh(x/2) thanks!
Hello, alexandrabel90! I found a solution, but I'm sure there's a more elegant one. $\text{Express }\sinh x \text{ in terms of }t\,=\,\tanh\tfrac{x}{2}$ $\text{Identity: }\;\tanh(2A) \:=\:\frac{2\
tanh A}{1 + \tanh^2A}$ . . Then: . $\t... | 5 | [
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... | 29,246 | 29246 | |
Find volume of a solid bound by 2 functions
Fins the volume if the solidobtained by rotating the region bounded by y=x^(1/3) and y=x/4
Rotating it about what?. y-axis?. x-axis?. Some other axis?. Rotated about x-axis using washers: Find the limits of integration by setting them equal and solving for x. We get x=0 and ... | 5 | [
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Improper integral related to the gaussian one
December 29th 2007, 11:39 AM #7
December 27th 2007, 06:30 AM #6
December 27th 2007, 12:56 AM #5
December 26th 2007, 07:10 PM #4
December 26th 2007, 06:55 PM #3
December 26th 2007, 06:49 PM #2
December 26th 2007, 12:59 PM #1
Well, by setting $x=\frac1u$ leads an useful ... | 5 | [
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-0.076171875,
0.03784179... | 29,248 | 29248 | |
Speed down hill!
July 12th 2006, 10:22 AM #1
Newbie
Joined
Jun 2006
Posts
21
1.A skier coasts down a very smooth, 10-m-high slope. If the speed of the skier on the top of the slope is 5.0 m/s, what is his speed at the bottom of the slope?
babygirl
1.A skier coasts down a very smooth, 10-m-high s... | 4 | [
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-0.0324... | 29,249 | 29249 | |
Math Help
November 12th 2008, 03:14 PM #1
Newbie
Joined
Sep 2008
Posts
9
No idea....
Let $X_1$ and $X_2$ has bivariate normal distribution with mean values are 0, variances 1 and correlation $\frac{1/2}$ Let $Y_1 = X_1 + X_2$ and $Y_2 = X_1 - X_2$
Find $P(1 < (Y_1)^2 + (Y_1)^2 < 6)$
$(Y_1)^2 +... | 5 | [
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0.008... | 29,250 | 29250 | |
Princple of mathematical analysis, by Walter rudin. Need help....
March 17th 2009, 12:35 AM #1
Newbie
Joined
Mar 2009
Posts
10
Princple of mathematical analysis, by Walter rudin. Need help....
Please explain me the equation (35), page number 154 from the book 'Principles of Mathematical Analysis' by Walt... | 5 | [
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Integration: calc2
April 9th 2008, 10:18 PM
amaya
Integration: calc2
Can anyone help me solve: the integral from 5 to infinity of: 7/((n^2)-16)
If you can just solve the integral that would be great! I can do the limit to infinity from there....I am having a lot of trouble with this one.
Thank you!!
A... | 4 | [
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... | 29,252 | 29252 | |
Find the remainder?
May 2nd 2009, 09:15 PM #1
Find the remainder?
Find the remainder which is obtained when the number $10^{10} + 10^{10^2} + 10^{10^3} + ... + 10^{10^{10}}$ is divided by 7.
By fermat's little theorem we know that
$10^6 \equiv 1 \mod (7)$
so $10^{10} = 10^6\cdot 10^4=10^4=1000$
... | 5 | [
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Multiobjective Coverage Control Strategy for Energy-Efficient Wireless Sensor Networks
International Journal of Distributed Sensor Networks
Volume 2012 (2012), Article ID 720734, 10 pages
http://dx.doi.org/10.1155/2012/720734
Research Article
Multiobjective Coverage Control Strategy for Energy-Efficient Wireless Sens... | 4 | [
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0.032470703125,
0.033447265625,
0.068359375,
-0.01470947265625,
-0.08447... | 29,254 | 29254 | |
prove uniform continuity given a periodic and continuous function
March 26th 2009, 02:05 PM #1
Senior Member
Joined
Feb 2008
Posts
410
prove uniform continuity given a periodic and continuous function
I'm stuck on how to do this proof.
Gaugan. Introduction To Analysis, 5th ed, p105
A function ... | 5 | [
-0.006317138671875,
0.0771484375,
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0.01544189453125,
0.0250244140625,
0.08837890625,
-0.08984375,
0.03173828125,
-0.0... | 29,255 | 29255 | |
Proposition 8
If in a right-angled triangle a perpendicular is drawn from the right angle to the base, then the triangles adjoining the perpendicular are similar both to the whole and to one another.
Let ABC be a right-angled triangle having the angle BAC right, and let AD be drawn from A perpendicular to BC.
I say ... | 4 | [
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0.056640625,
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0.04345703125,
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0.045654296875,
0.0014801025390625,
0.004913330078125,
0.01385498046875,
-0.0... | 29,256 | 29256 | |
Riemann Integrable Function
May 3rd 2009, 10:53 PM #1
Newbie
Joined
Apr 2009
Posts
2
Riemann Integrable Function
Suppose f and g are Riemann Integrable Functions on[a,b] and f(x)=g(x) if x not equal to c.
show that : $<br /> \int ^a_b f= \int ^a_b g<br />$
Last edited by math43; May 5th 2009 at ... | 5 | [
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0.080078125,
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Thomas Jungblut's Blog
Hello!
I'm back with some exiting new hacking. At the beginning of the week,
Jon Harrop
came to the Microsoft London office and gave a two day training on F#. The training was nice, I enjoyed it very much and we all laughed a lot :-)
In the end, I want to share a small project that I came up ... | 4 | [
-0.051513671875,
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0.02587890625,
-0.0185546875,... | 29,258 | 29258 | |
Evaluate the integral (by susbstitution)...
September 30th 2013, 05:56 AM #1
Evaluate the integral (by susbstitution)...
I have the following integral $\int \frac{-8x}{(x+2)^\frac{1}{4}}$ which I`m supposed to evaluate by substitution, but I can't wrap my mind around this,
I tried $u = {(x+2)^{-\frac{1}{4}}}... | 5 | [
0.04296875,
-0.0166015625,
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0.0291748046875,
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0.0247802734375,
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0.076171875,
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-0.004241943359375,
0.052490234375,
-0.014... | 29,259 | 29259 | |
Dynamic of a TB-HIV Coinfection Epidemic Model with Latent Age
Journal of Applied Mathematics
Volume 2013 (2013), Article ID 429567, 13 pages
http://dx.doi.org/10.1155/2013/429567
Research Article
Dynamic of a TB-HIV Coinfection Epidemic Model with Latent Age
Department of Applied Mathematics, Yuncheng University, Y... | 5 | [
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0.10595703125,
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-0.042236328125,
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-0.... | 29,260 | 29260 | |
Estimating sample size for a descriptive study in quantitative research
Editor’s note: Gang Xu is a senior research consultant in statistics at Brintnall & Nicolini, Inc., a Philadelphia, Pa., health care consulting and marketing research firm.
In quantitative marketing research, we frequently need to calculate the sa... | 5 | [
0.1513671875,
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... | 29,261 | 29261 | |
Factoring response time equation
August 8th 2007, 02:39 PM #1
Newbie
Joined
Aug 2007
Posts
3
Factoring response time equation
Remember the calculation of response time in the lecture?
R = SQ + S(2)
Based on one Queuing Theorem:
Q = a * R(3)
Manipulating equations (2) and (3) using Fa... | 4 | [
-0.0771484375,
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0.00799560546875,
-0.... | 29,262 | 29262 | |
Algebraic Simplification
August 4th 2011, 05:49 PM
Umair
Algebraic Simplification
Show that $\frac{(-1+(a)^2)}{(2-y)}=\frac{17}{(2+y)^3}$ where
$a=\frac{(1-x)}{(2-y)}$ and also $x^2 - y^2 - 2x +4y -20 =0$
Can anyone do? lol
p.s. This is the end simplification of another problem which I just don't k... | 5 | [
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0.05126953125,
0.0625,
-0.004852294921875,
... | 29,263 | 29263 | |
Math Help
June 28th 2006, 09:15 AM #1
Newbie
Joined
Jun 2006
Posts
21
student has a car that gets, on average, 25.0 mi/gal of gasoline. She plans to spend the a year in Europe and take the car with her.
What should she expect the car's average gas mileage to be in kilometers per liter?
During the... | 4 | [
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-0.030517... | 29,264 | 29264 | |
[SOLVED] Integration by parts...I think...
September 7th 2008, 06:50 PM #1
Junior Member
Joined
Jun 2008
Posts
68
[SOLVED] Integration by parts...I think...
$<br /> \int e^{3x} sin(5x)~dx<br />$
I tried using both sin(5x) and $e^{3x}$ as u and all I ended up doing was coming up with the same problem... | 5 | [
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0.042236328125,
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0.01214599609375,
... | 29,265 | 29265 | |
Diagonalizable transformation question
June 26th 2009, 05:32 PM #1
Diagonalizable transformation question
In another forum (in Spanish : Aplicación diagonalizable - Foro fmat.cl), one asked if $T:\mathbb{R}^2 \to \mathbb{R}^2$ , $T(x,y)=(x+y,y)$ is diagonalizable.
Another guy answered that no, because the geo... | 5 | [
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-0.06982421875,
-... | 29,266 | 29266 | |
Stuck On Some Trig Identities
June 5th 2007, 04:00 PM #1
Newbie
Joined
Jun 2007
Posts
8
Stuck On Some Trig Identities
I was having trouble with a few problems none of my friends could help me with, so I figured I'd give this forum a try. Thanks in advance, here are the problems:
Establishing the Ide... | 5 | [
-0.04248046875,
0.0211181640625,
0.06494140625,
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0.018310546875,
0.... | 29,267 | 29267 | |
Range of y=3/(x^2+1)?
September 20th 2010, 05:18 PM #1
Newbie
Joined
Sep 2010
Posts
4
Range of y=3/(x^2+1)?
I want to know how to find the range of the equation y=3/(x^2+1) and y= (x-4)/x without using the graphical method?
Detailed explanation would be appreciated.
Please and thank you.
La... | 4 | [
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0.040771484375,
-... | 29,268 | 29268 | |
Prove that the equation has at least one real root IN AN INTERVAL OF 0.01
September 20th 2009, 02:58 PM #1
Super Member
Joined
Nov 2008
Posts
597
Prove that the equation has at least one real root IN AN INTERVAL OF 0.01
Question:
(a) Prove that the equation has at least one real root.
(b) Use yo... | 4 | [
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-0.... | 29,269 | 29269 | |
[SOLVED] What is the 4-digit number?
October 31st 2007, 02:45 PM #1
MSYORK89
Guest
If ABCD x A= DCBA, what are the four digit numbers that give you this? And what is the equation? Without repitition?
Hello, MSYORK89!
Is there a typo?
If $ABCD \times A\:=\: DCBA$, what are the four-digit numbers?
... | 4 | [
-0.038818359375,
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0.000423431396484375,
-0.043701171875,
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0.10986328125,
0.011962890625,
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0.05322265625,
-0.0299072265625,
0.01599... | 29,270 | 29270 | |
A Measurement System for the Position and Phase Errors of the Elements in an Antenna Array Subject to Mutual Coupling
International Journal of Antennas and Propagation
Volume 2012 (2012), Article ID 526121, 8 pages
http://dx.doi.org/10.1155/2012/526121
Research Article
A Measurement System for the Position and Phase ... | 4 | [
0.00970458984375,
0.0595703125,
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0.045166015625,
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-0.009765625,
-0.050537109375,
-0.02331542968... | 29,271 | 29271 | |
Math Help
October 3rd 2006, 05:19 PM #1
Newbie
Joined
Oct 2006
Posts
12
Two lookout stations, which are 25 miles apart along the coast on a north-south line, spot an approaching yacht. One lookout station measures the direction to the yacht at N33(degrees)E, and the
other station measures the directi... | 4 | [
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0.0260009765625,
-0.01904296875,
0.0306396484375,
-0.005157470703125,
0.0279541015625,
0.028076171875,
-0.0554199... | 29,272 | 29272 | |
Linear Approximations
April 1st 2007, 12:18 PM #1
Junior Member
Joined
Mar 2007
Posts
43
Hello, Everyone!
Any help would be greatly appreciated
Use linear approximation, i.e. the tangent line, to approximate
Let
and where
Using this, we find our approximation for
NOTE: For this p... | 5 | [
-0.0096435546875,
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0.0625,
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0.0263671875,
0.00732421875,
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0.03125,
-0.0245361328125,
-0.01507568359375,
... | 29,273 | 29273 | |
Prove f is differentiable at x0 if limit of f' exists at x0
April 11th 2009, 10:00 AM #1
Senior Member
Joined
Feb 2008
Posts
410
Prove f is differentiable at x0 if limit of f' exists at x0
Suppose $f$ is differentiable on $(a,b)$, except possibly at $x_0\in(a,b)$, and is continuous on $[a,b]$; assume $\l... | 4 | [
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0.0184326171875,
0.115234375,
-0.0191650390625,
-0... | 29,274 | 29274 | |
use cylindrical shells...
March 28th 2010, 09:44 PM #1
Senior Member
Joined
Aug 2009
Posts
349
use cylindrical shells...
use cylindrical shells to find the volume of the solid generated when the region bounded by xy = 4, x + y = 5 is revolved about the x -axis. i did the work for this problem i was wonde... | 5 | [
0.03759765625,
0.040771484375,
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0.0595703125,
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0.00299072265625,
-0.... | 29,275 | 29275 | |
A Note on Elongations of Summable
The Scientific World Journal
Volume 2013 (2013), Article ID 384131, 3 pages
http://dx.doi.org/10.1155/2013/384131
Research Article
A Note on Elongations of Summable QTAG-Modules
^1Department of Mathematics, Aligarh Muslim University, Aligarh 202 002, India
^2Department of Mathemati... | 5 | [
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0.09130859375,
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0.07177734375,
-0.04638671875,
0... | 29,276 | 29276 | |
Definite Integral
February 24th 2009, 05:09 AM #1
Member
Joined
Nov 2007
Posts
232
Definite Integral
Please check my answers. Thank you.
Evaluate the given definite integral using the fundamental theorem of calculus. Round to 2 decimal places if needed.
$\int_{-4}^0 (2x + 6)^4\, dx$
$= \fr... | 5 | [
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0.043212890625,
0.0007476806640625,
-... | 29,277 | 29277 | |
Residual Iterative Method for Solving Absolute Value Equations
Abstract and Applied Analysis
VolumeΒ 2012Β (2012), Article IDΒ 406232, 9 pages
http://dx.doi.org/10.1155/2012/406232
Research Article
Residual Iterative Method for Solving Absolute Value Equations
^1Mathematics Department, COMSATS Institute of Informati... | 5 | [
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0.09375,
0.07275390625,
-0.07763671875,
0.0264892578125,
0.003448486328125,
-0.022583007812... | 29,278 | 29278 | |
A General Solution for Troesch's Problem
Mathematical Problems in Engineering
Volume 2012 (2012), Article ID 208375, 14 pages
http://dx.doi.org/10.1155/2012/208375
Research Article
A General Solution for Troesch's Problem
^1Electronic Instrumentation and Atmospheric Sciences School, University of Veracruz, Xalapa, V... | 5 | [
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0.05419921875,
-0.06640625,
-0.0317382... | 29,279 | 29279 | |
On a Constructive Approach for Derivative-Dependent Singular Boundary Value Problems
International Journal of Differential Equations
Volume 2011 (2011), Article ID 261963, 16 pages
http://dx.doi.org/10.1155/2011/261963
Research Article
On a Constructive Approach for Derivative-Dependent Singular Boundary Value Proble... | 5 | [
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... | 29,280 | 29280 | |
Partial Derivitives
Find direction of normal and the equation of the tangent plane at the point. z=sqrt(4-x^2-y^2) at (1,1,sqrt(2))
Last edited by heatly; March 5th 2011 at 12:54 AM.
Use the well known result: $\vec{v}=(f_x(P_0),f_y(P_0),-1)$ is an orthogonal vector to the tangent plane for the surface $S\equiv z=f(x... | 4 | [
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-0.03173828125... | 29,281 | 29281 | |
CMS Winter 2006 Meeting
A model for a vector-borne disease is considered, in which some vectors are refractory to infection by the pathogen. The model describes two populations of vectors: wild vectors can be infected
by the pathogen, while refractory vectors cannot. However, refractoriness comes at the cost of... | 4 | [
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Wolfram Demonstrations Project
Supersymmetry for the Square-Well Potential
The most elementary problem in quantum mechanics considers a particle of mass in a one-dimensional infinite square well of width ("particle in a box"). The Schrödinger equation can conveniently be
written in the modified form in , such that the... | 4 | [
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Homework Help
Posted by Nick on Monday, September 18, 2006 at 3:39pm.
Answer this please!!!
Noelani was saving Luscious Lemon soda coupons, which came in the caps of the Luscious Lemon sodo bottles. There were two kinds of coupons: 5-point coupons and 2-point coupons. So far, she had
collected 23 coupons, worth 76 po... | 4 | [
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limit problem
June 15th 2009, 02:09 AM #1
Newbie
Joined
Nov 2008
Posts
5
limit problem
2) Evaluate: $lim_{x \to 0} (\frac{1}{ln(x+1)} - \frac{1}{x})$
I don't know how to do this. Please show me a step-by-step solution
The only solution I can think of right now involves Maclaurin series. Have you... | 5 | [
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... | 29,285 | 29285 | |
How Close Is The Normal Distribution?
February 4, 2013
By normaldeviate
(This article was originally published at Normal Deviate, and syndicated at StatsBlogs.)
HOW CLOSE IS THE NORMAL DISTRIBUTION?
One of the first things you learn i... | 4 | [
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circle (2)
November 18th 2009, 05:42 AM #1
Senior Member
Joined
Jan 2009
Posts
381
circle (2)
In the figure , ST is the common tangent at P to the two circles . PVW and PQR are two straight lines . OS bisects \angle PSR and PV=PS , the lines QV and RW are also parallel .
Prove that SR=VW .
Hell... | 4 | [
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Homework Help
(a) Find g (–1).
(b) State the domain of the function .
• Algebra - drwls, Saturday, June 13, 2009 at 6:26am
You need to add parentheses to define the numerator and denominator.
Do you mean g(x) = (10-x)/(2+x), or
10 - (x/2) + x ?
Other interpretations are also possible. They are no... | 4 | [
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Linear algebra. Showing n x n matrix has no inverse
April 20th 2008, 02:36 AM #1
Newbie
Joined
Apr 2008
Posts
11
Linear algebra. Showing n x n matrix has no inverse
If A is an n x n matrix, where n is an odd integer, which satisfies A^T=-A (ie its skew-symmetric). Show that A has no inverse...........i c... | 4 | [
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Marginal Probability Mass Function
November 12th 2009, 07:31 PM
Cickle
Marginal Probability Mass Function
I am having some trouble with one of my homework problems and I would like some help on the items below.
The joint distribution of X and Y is defined by f(x,y) = |x-y|/10 for x=1,2 and y=1,2,3,4.
... | 4 | [
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Scaling Analysis of the Tensile Strength of Bamboo Fibers Using Weibull Statistics
Advances in Materials Science and Engineering
Volume 2013 (2013), Article ID 167823, 6 pages
http://dx.doi.org/10.1155/2013/167823
Research Article
Scaling Analysis of the Tensile Strength of Bamboo Fibers Using Weibull Statistics
^1S... | 4 | [
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Schaum's Probability & Random Processes Question 1.11
September 5th 2007, 09:09 AM
malweth
Schaum's Probability & Random Processes Question 1.11
I was going to post this yesterday, but thought I understood it ... and now I don't:
In Schaum's Probability, Random Variables, & Random Processes by Hwei Hsu, pro... | 4 | [
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X^2 injective in a ring
November 16th 2008, 03:38 AM #1
Newbie
Joined
Oct 2008
Posts
22
X^2 injective in a ring
Let $A$ be a finite comutative ring . If $f:A->A$ , $f(x)=X^2$ is injective prove that :
a) $1+1=0$
b) $P(x)=x^{2n}+a$ is reductible for all $n \in N$ and for all $a \in A$
Convinc... | 4 | [
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Kinematics... please help
November 23rd 2007, 10:17 PM
jimzer
Kinematics... please help
hey guys i got my maths exam in two days and need urgent help in the kinematics area.
i get some of the basic stuff but anyways the question i'm struggling with is
Particle moves in a straight line so its position x... | 4 | [
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Math Help
You can do this, $\sin 2x-\cos 3x=0$ $\sin 2x-\sin \left( \frac{\pi}{2} -3x \right)=0$ Use identity, $\sin x-\sin y=2\cos \left( \frac{x+y}{2} \right)\sin \left(\frac{x-y}{2} \right)$ Thus, $2\cos \
left( \frac{\pi}{4}-\frac{5x}{2} \right) \sin \left( \frac{x}{2}-\frac{\pi}{4} \right)=0$ Thus, you have a two... | 4 | [
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Posts about Lesson 7: Linear Equations and Quadratic Equations on Maths = Fun
This is the translation of the epitaph into Spanish:
” Aquí fueron sepultados los restos de Diofanto. La infancia de Diofanto duró 1/6 de su vida, 1/12 en la adolescencia, cuando la barba cubrió su cara, Después de 1/7 de su vida contrajo nu... | 4 | [
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0.0654296875,
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0.00110626220703125,
-0.047607421875,
-0.03955078125,
0.04541015625,
-0.11181640625,
0.0... | 29,296 | 29296 | |
the encyclopedic entry of Weathervane effect
Flight dynamics is the science of air and space vehicle orientation and control in three dimensions. The three critical flight dynamics parameters are the angles of rotation in three dimensions about
the vehicle's center of mass, known as pitch, roll and yaw (See Tait-Bryan ... | 4 | [
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0.051513671875... | 29,297 | 29297 | |
Series Solutions Near an Ordinary Point help please
May 28th 2009, 01:08 AM #1
Newbie
Joined
May 2009
Posts
7
Series Solutions Near an Ordinary Point help please
Hi, I am having trouble solving this problem, please help me figure this one out. Thanks in advance.
xy'' + y' + xy=0 at ordinary point x=... | 5 | [
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Urgent Circle Proof
September 7th 2007, 06:34 PM
trent19
Urgent Circle Proof
I need to prove that a radius of a circle bisects a chord at 90 degrees, using a vector method and another method. I bet the proof is simple but it has confused me, seeming as I have always taken
this as a property. If you can help,... | 4 | [
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