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

Feb2313 09:23 AM
micromass

1 
37,796 
I just dont get how this branch of mathematics can exist. How is it that we can use "i" or √1, its not even real!!!...

Oct207 02:35 PM
matteo16

5 
1,469 
Hi, I'm looking to receive a little help with this area of math. (My math skills are very poor, (currently repeating...

Oct207 01:02 PM
arildno

9 
2,289 
I am new to Derive 6 and Laplace Transforms. Is it possible to solve the closed loop gain A/B of the attached loop...

Oct207 10:59 AM
uart

3 
5,329 
can some one show me how to write
5+10+17+26 in sigma notation

Oct207 09:21 AM
HallsofIvy

11 
1,359 
So I have an equilateral triangle an I want to divide it in 4 parts, all having the same area. This can be done in a...

Oct207 02:28 AM
jonas.hall

2 
3,130 
Im doing a short technical paper on matrices for my college magazine, and Im looking for some problem I can model....

Oct107 01:00 PM
chaoseverlasting

10 
3,437 
I put this question in the 'Calculus' forum but didn't really get a response. Maybe it's a silly question but I...

Sep3007 06:37 PM
DeadWolfe

2 
1,774 
http://www.sciencemag.org/cgi/content/summary/317/5846/1851
==quote from Science==
EDUCATION RESEARCH:
U.S. Says No...

Sep3007 04:41 PM
Quantumduck

13 
3,481 
Quick Summary: I'm in a class were we analyze code / find big theta / Oh / etc (Algorithm Design and Analysis). It's...

Sep3007 03:08 PM
Servo888

0 
1,747 
apologie me if this question isn't corret or is simple for you
do solutions of an equation as quaternions or as...

Sep3007 01:29 PM
matt grime

1 
1,326 
Hello,
I am a High school algebra teacher looking for a modeling tool for algebra tiles. I have four sources of...

Sep3007 09:52 AM
Quantumduck

28 
3,364 
I'm wondering if someone can furnish me with either an example of a topological space that is countable (cardinality)...

Sep3007 12:22 AM
morphism

3 
5,345 
Find the equation of a ellipse given the foci. (1,0) (3,4)

Sep2907 05:44 PM
mathman

2 
1,320 
Hey there everyone. I was looking at an epsilondelta proof I did and realized that I wasn't exactly sure why one of...

Sep2907 03:56 PM
HallsofIvy

4 
2,200 
I am teaching euclidean geometry this fall and realized i dont know it that well. there are some famous modern...

Sep2907 11:46 AM
mathwonk

29 
5,392 
maybe i'm wrong but when i was following a lesson of mechanics by video lectures the teacher gave a very superficial...

Sep2907 09:28 AM
mathwonk

10 
2,661 
I'm looking for a 3Dgraphingfreeware thats takes x, y, z variables (axis dependence) because I want to see how the...

Sep2907 03:56 AM
PerennialII

1 
4,797 
I have 20 puzzle tables (1,2,3,…,20) that contain of 10 rows (1,2,3,…,10) each. There are numbers 1,2,3,4,… in each of...

Sep2907 02:04 AM
wustvn

2 
1,470 
Does anyone have any information whatsoever about freeware or any other software that I might be able to use. I...

Sep2807 07:26 AM
robphy

2 
1,144 
can anyone give me links to websites that explain curve sketching right from scratch...

Sep2807 07:19 AM
Kurdt

1 
1,518 
In the derivation of a cycloid, it says (pg. 655 Stewart, 5th ed) OT = \text{arc} \ PT = r \theta .
I was just...

Sep2807 06:46 AM
HallsofIvy

4 
1,672 
hello
i want to find the peak point of a quadratic bezier curve.
one approach is finding all distance between "start...

Sep2707 02:42 PM
hotvette

13 
7,390 
I can't solve for y from:
x =  K_{1}* y *\sqrt{K_{2}y}
where K(1) and K(2) are constants.
I am pretty sure...

Sep2707 08:55 AM
MCarroll

4 
1,506 
I will use this expression as an example:
2x + 7y  5
Now, I know that this expression literally means "...

Sep2607 01:14 PM
CRGreathouse

8 
2,336 
Hello there,
I'm quite weak in factorising functions,especially those with indices.
I would appreciate any link on...

Sep2607 08:00 AM
bkvitha

4 
1,143 
Is there a definitive source which gives the roots of Bessel functions to n decimal places?
I know there's a...

Sep2607 07:23 AM
J77

0 
5,409 
if sinh(y)=x, then, show that cosh(y)=sqrt(1+x^2)
I know how to prove but i have difficult in choosing the signs.
...

Sep2507 11:43 PM
cks

8 
3,936 
\int^{6}_{0} \sqrt{1n^2x^2}dx=\pi+e
I need to solve this for n. I believe there should only be one possible...

Sep2507 06:17 PM
camilus

5 
1,158 
Contemporary Abstract Algebra. by Joseph A. Gallian
I own this book, and personally love it. I just want to know...

Sep2507 06:13 PM
mathwonk

9 
3,053 
is the set of all functions a ... (blank), i don't know what the correct classification is, but it should contain the...

Sep2507 12:49 PM
matt grime

10 
1,609 
I'm sure there are lots of way to define complexity in different contexts. Some that I've heard of include:
...

Sep2507 07:41 AM
CRGreathouse

3 
2,052 
This is something I understood before, but for some reason I forgot it. How do you prove this inequality holds, if f...

Sep2407 09:27 PM
waht

9 
13,116 
Here is the question: the square root of X minus 3, but the 3 is not under the square root divided by x9? also...

Sep2407 03:51 PM
ActionPotential

9 
37,098 
I completely forget how to do this... can someone give me a review on how to do this?
For example:
z=8e^(i(pi)/3)...

Sep2407 12:48 PM
learningphysics

17 
2,555 
A relatively lengthy proof I am writing for an assignment leads me to a proposition (which I need to turn into a lemma...

Sep2407 12:38 PM
Defennder

11 
1,687 
How can I find Y from two equations WITHOUT using X:
(1) Xcos(Z)  Ycos(W) = 0
(2) Xsin(Z) + Ysin(W)  mg = 0
...

Sep2307 02:32 PM
danni7070

5 
1,197 
i was looking through a book and came across a double integral that was split into the product of two single...

Sep2207 11:17 PM
mongoose

5 
2,113 
in the xyplan, line t passes through the origin and is perpendicular to the line 4x+y= k, where k is a constant. If...

Sep2207 09:55 PM
mathwonk

3 
1,176 
Prove that for every set of n numbers has a subset whose sum is divisible by n. I found this result very interesting....

Sep2207 09:49 PM
mathwonk

6 
1,683 
Does anyone know where I can get a nice large trig identities poster that I can put up in my dorm so I don't always...

Sep2207 08:59 PM
rocomath

4 
3,091 