Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:23 AM
micromass

1 
33,192 
use the stokes theorem to evaluate the surface integral where
F=(x^2+y^2; x; 2xyz)
and S is an open surface...

May1309 08:25 PM
dx

1 
831 
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} &...

May1309 04:38 PM
matt grime

5 
988 
Use the divergence theorem to compute the surface integral F dot dS , where
F=(xy^2, 2y^2, xy^3) over closed...

May1309 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...

May1309 12:45 PM
squidsoft

1 
1,385 
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...

May1309 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...

May1209 09:31 PM
Integral

7 
7,588 
This is causing me a bigger headache than I anticipated.
Basically, given an integer N and a number M, I need a...

May1209 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...

May1209 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...

May1109 04:01 PM
billyx3

0 
619 
I am still a little early in my math education but we were talking about this the other day.
Mine is the right angle...

May1109 03:06 PM
AUMathTutor

15 
1,538 
Hello,
I know normally giving solutions is frowned upon, but I have lost my colleagues data sheets and desperately...

May1109 02:25 PM
jweygna1

3 
1,236 
Hi all,
I want to implement diffraction of waves by edges. I have a wedge with 2 faces oface and nface. I have...

May1109 09:19 AM
whitenight541

3 
3,836 
Hi all,
I like working with computer graphics so I often work between 2D and 3D computer simulations.
For...

May1109 07:54 AM
KLoux

3 
1,763 
What is the average number of intersections for two infinite curves confined to a plane?

May1009 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...

May1009 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...

May1009 02:05 AM
deferro

16 
1,707 
Are there any free, online Math Olympiad resources for studying? These are the high school level math competitions....

May909 11:40 PM
qntty

2 
1,480 
What are complexity classes (P, NP, etc) in terms of pure sets? ZFC, I mean.

May909 12:07 PM
Dragonfall

6 
890 
sorry about the mistake in my last post. I miswrote the bottom vertex of the equilateral triangle.
Let me restate...

May909 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...

May809 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...

May809 06:39 AM
HallsofIvy

12 
1,370 
In George Gamow's book "One Two Three Infinity" he explains on page 56 how to turn a "double apple" with a free...

May709 10:20 PM
slider142

1 
760 
I am math teacher and was asked the classic question, "Where am I ever going to use this in life" I usually have a...

May709 08:58 PM
Russell Berty

4 
7,527 
Given the quantity
Cosh(x)*Cosh(y)
where x and y are two indipendent real variables is it possible to write it...

May709 12:48 PM
Russell Berty

3 
1,570 
Hi,
The volume of a cone is 1/3 pi R^2 h.
Why then is the answer in units cubed. Certainly the h is contributing a...

May709 11:54 AM
HallsofIvy

3 
799 
This is the 3rd problem from the book, The Unsolvable and the Solvable.
This is the last one I post from this book....

May709 12:04 AM
Russell Berty

2 
1,124 
Hey all, I was just curious:
Why is the conjugate of a complex number (a + bi) defined as (a  bi)? If we...

May609 08:13 AM
CRGreathouse

8 
3,353 
What's the circumference of a circle of radius r, on a sphere of radius R?

May609 01:57 AM
adriank

6 
5,473 
Hi,
In my report, I want figures to be numbered within sections, so I put the following in the preamble of my...

May509 10:15 AM
matt grime

1 
4,133 
This is NOT a homework problem.
I went to the library and found this problem in a math book, called "The Solvable...

May509 06:58 AM
TVP45

12 
1,258 
I often see the second derivative written down like this:
\frac{d^2y}{dx^2}
Although it seems more logical to me...

May509 05:12 AM
ImAnEngineer

7 
3,568 
There is a very handy numerical solution for cubic equations like x^3+ax^2+bx+c=0 with x_i \in R while a^23b \neq...

May409 05:55 PM
edgo

0 
4,141 
Hi,
I am quite new to latex but have a piece of maths coursework to do so decided that I would use that in order to...

May409 10:57 AM
ryan88

4 
896 
Again, this is NOT a homework problem.
Here I am posting a second problem from the math book, The Solvable and the...

May409 08:05 AM
Georgepowell

2 
1,036 
The following set of equations is believed to be unknown but it is very hard to become sure of that. If it is really...

May409 04:31 AM
edgo

2 
2,089 
Hi,
I've been plotting potentials and electric fields inside and outside shells; when I create 2 separate...

May309 04:39 PM
gulfcoastfella

2 
2,360 
Does anyone know if there is a summation formula to find the sum of an expression with n as an argument in a trig...

May309 01:44 PM
Ben Niehoff

1 
2,402 
Hi,
suppose I have two vectors, one in the i direction and the other in j direction, i is horizontal and j...

May309 10:21 AM
cstrieder

8 
2,043 
hi,
I have:
exp \left(\frac{\lambda}{2^\mu^2} \sum_{i=1}^n \frac{(x_i\mu)^2}{x_i}\right)
I am trying to...

May309 06:15 AM
HallsofIvy

1 
792 
In Hilbert's famous paradox of the Grand Hotel, we have a hotel with an infinite number of rooms and an infinite...

May209 05:20 PM
D H

89 
13,935 