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General Math

- Math topics not applicable to the categories below. High-school Math
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Please post any and all homework or other textbook-style problems in one of the Homework & Coursework Questions...
Feb23-13 09:23 AM
micromass
1 33,243
On a recent outing with friends we came up on a debate and im hoping someone can help me find out who was right. The...
May18-09 01:31 PM
CRGreathouse
7 1,380
I searched around a while on the site to see if I could find a thread that could answer this question and was unable...
May18-09 12:10 PM
Dragonfall
1 3,425
Give a rigorous proof using the appropriate axioms and the definition ,\frac{a}{b}=a\frac{1}{b} of the following: ...
May18-09 01:54 AM
evagelos
9 1,703
can anyone tell me how it works, like visually, what does it do. Im curious. iv heard its a three point approximation...
May17-09 07:26 AM
HallsofIvy
1 3,230
hello, I was trying to figure out what will be the y value for this equations: 1 - e^-0.15*10^-5*y = 0.1 ...
May16-09 02:52 PM
Georgepowell
8 1,373
hi, I was wondering how can i use actual symbols like partial derviates, integration, or derivation etc etc symbols...
May16-09 02:39 PM
dx
2 711
Hello, During my derivation, I am faced with the following integral: ...
May16-09 09:29 AM
aaryan0077
3 1,388
I mean, e is (1+(1/n))^n as n approaches infinity. Now, if you put \infty instead of n, you get...
May16-09 09:28 AM
aaryan0077
20 14,989
Y=x^2 I know that x= -/+ sqrt(y) but I don`t understand why I do this every time I try to solve "y=x^2" for "x"....
May16-09 12:03 AM
wajed
7 1,456
I am learning how to prove conditional identities like (a^2-c^2+b^2+2ab)/(c^2-a^2+b^2+2bc) = (s-c)(s-a) if a+b+c...
May15-09 11:14 PM
qntty
6 3,981
http://upload.wikimedia.org/math/d/c/4/dc4d000103c1293c5cde00fac04850d6.png Is this true: ...
May15-09 05:57 PM
Tibarn
11 1,228
Hi guys, im currently undergoing my final year engineering project, so im implementing color sensor and im running...
May15-09 12:07 PM
thavamaran
0 615
for example: f(x) = x^(x^x) Firstly, is there already an inverse of this function that can be expressed in...
May14-09 04:11 PM
Georgepowell
3 892
Is there any trigonometric function f(theta) where theta is an angle such that f(Pi-theta)=-f(theta) and such that...
May14-09 02:55 PM
AUMathTutor
7 6,497
From a paper I've been reading: I wanted to know how to interpret the notation. What does it mean to take the...
May14-09 10:30 AM
CRGreathouse
4 2,895
hi there, im a german student and ive come across a phrase that is: (2) and (5) are binding in equilibrium, and (3)...
May14-09 07:29 AM
tiny-tim
1 988
I've run into these formulas many times but I've never seen how they were derived. Say you want to fit a line to...
May14-09 07:25 AM
Borek
5 899
How do you show that there is always a straight line bisecting a finite set of points on a plane?
May13-09 11:53 PM
maze
8 1,370
use the stokes theorem to evaluate the surface integral where F=(x^2+y^2; x; 2xyz) and S is an open surface...
May13-09 08:25 PM
dx
1 832
Suppose you have a matrix A: \left( \begin{array}{ccc} a_{1,1} & a_{1,2} & a_{1,3} \\ a_{2,1} & a_{2,2} &...
May13-09 04:38 PM
matt grime
5 989
Use the divergence theorem to compute the surface integral F dot dS , where F=(xy^2, 2y^2, xy^3) over closed...
May13-09 12:53 PM
HallsofIvy
1 683
Hi, I'm trying to learn Mathematica. Is it possible to open a second notebook in Mathematica, but without...
May13-09 12:45 PM
squidsoft
1 1,386
I would like an example in Latex of a product with indices n=1 to N for bN, all minus 1, finally equal to bZ. I have...
May13-09 11:54 AM
Loren Booda
2 877
Is it possible to draw a perfect circle. My answer wold be no, because the perimeter of the circle should be a...
May12-09 09:31 PM
Integral
7 7,593
This is causing me a bigger headache than I anticipated. Basically, given an integer N and a number M, I need a...
May12-09 04:47 PM
rsq_a
7 1,403
Hi, I use the \frac{-b \ \pm \ \sqrt{b^2 - 4ac}}{2a} formula to factoring the quadratic equation. Can anyone tell...
May12-09 11:01 AM
epenguin
2 1,464
I've read through a lot of different threads on the topic of prerequisite knowledge required to take a course in...
May11-09 04:01 PM
billyx3
0 620
I am still a little early in my math education but we were talking about this the other day. Mine is the right angle...
May11-09 03:06 PM
AUMathTutor
15 1,541
Hello, I know normally giving solutions is frowned upon, but I have lost my colleagues data sheets and desperately...
May11-09 02:25 PM
jweygna1
3 1,237
Hi all, I want to implement diffraction of waves by edges. I have a wedge with 2 faces o-face and n-face. I have...
May11-09 09:19 AM
whitenight541
3 3,837
Hi all, I like working with computer graphics so I often work between 2D and 3D computer simulations. For...
May11-09 07:54 AM
KLoux
3 1,765
What is the average number of intersections for two infinite curves confined to a plane?
May10-09 11:41 AM
Loren Booda
13 1,595
Guys..I need some help...Doea anyone know of a way to diagonalise a tridiagonal Symmetric matrix OR obtain the...
May10-09 07:58 AM
Physicslad78
0 1,456
This problem had arose in a question I was trying to answer in which I could take two approaches to solve it, but one...
May10-09 02:05 AM
deferro
16 1,708
Are there any free, online Math Olympiad resources for studying? These are the high school level math competitions....
May9-09 11:40 PM
qntty
2 1,480
What are complexity classes (P, NP, etc) in terms of pure sets? ZFC, I mean.
May9-09 12:07 PM
Dragonfall
6 891
sorry about the mistake in my last post. I miswrote the bottom vertex of the equilateral triangle. Let me re-state...
May9-09 02:21 AM
Russell Berty
1 934
1. A fire in a building B is reported on telephone to two fire stations P and Q , 20 km apart from each other on a...
May8-09 07:59 AM
al2521300
3 1,327
"In the first place, let me say that delta depends upon epsilon and not the other way round as you have stated. We...
May8-09 06:39 AM
HallsofIvy
12 1,371
In George Gamow's book "One Two Three Infinity" he explains on page 56 how to turn a "double apple" with a free...
May7-09 10:20 PM
slider142
1 760

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