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Jun1-13 07:36 PM Fredrik 
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Mar10-14 04:45 PM mfb 

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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
1 33,193
Can anyone give me a good definition of Euler's number and its significance. I see it everywhere, it's prolific in...
T 08:05 AM
6 132
Is possible to rewrite the quadratic, cubic and quartic determinant in terms of matrices and matrix operations (trace...
T 12:37 AM
4 181
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A periodic function is one that ##f(\theta) = f(\theta + nT)##, by definition. However, the argument ##\theta## can be...
Y 09:38 PM
1 82
Why variables (RHS) in directly proportionality are always multiplied. Suppose the newton 2nd law ...
Y 07:34 PM
17 234
I'm writing a piece of code and I want to simplify a bunch of if/else statements. I need...
Y 04:31 PM
15 275
Why do I feel like I am about to be fed to a pack of hungry wolves? I take it as a foregone conclusion that anyone who...
Y 03:31 PM
11 273
Let M=Men, D=Days, H=Hours, η=efficiency, W=Work ##MDH \propto W## ##MDH = kW## ## \frac {MDH}{W} = k## ...
Y 10:58 AM
10 237
Commonly I see ##\sin(\omega t + k x)## I ask myself, if ωt is equal to θ thus kx is equal to what?? Also, the...
Apr18-14 11:02 PM
10 285
Whenever I'm on math class I've noticed that often professors, and in my online class the videos and examples all seem...
Apr18-14 03:27 PM
5 142
Given Cartesian (x,y,z), Spherical (r,\theta,\phi) and parabolic (\varepsilon , \eta , \phi ), where \varepsilon =...
Apr18-14 04:22 AM
0 114
Hello. So, I am building a camera and have ran into a problem that I feel could be solved with a semi-simple...
Apr17-14 12:59 PM
6 200
I have been wondering: Given an arbitrary geometric shape is there a sequence of tests I can perform on individual...
Apr17-14 11:35 AM
7 958
In my previous two math classes I'd get the answer wrong if I put the number first then the variable as my answer. Now...
Apr16-14 11:48 PM
18 361
Hello, this isn't a homework problem, so i'm hoping it's okay to post here. I would like to know the correct way...
Apr16-14 09:02 AM
5 208
Guys, I may need your help. There is a question saying that how to solve the cubic function in general form, which...
Apr16-14 05:56 AM
4 272
I was studying the dot product, and it says that (a.b).c makes no sense. so if you do (a.b) can = to β and then is...
Apr16-14 05:46 AM
8 255
Who may help me with this question? Thanks. Log10(x)^log10(log10X)=10000
Apr15-14 07:43 PM
3 183
This thread does justice to a question put forth online several times and, as far as I can tell is only answered in...
Apr15-14 10:44 AM
8 219
If ##y=x^4##, so x is equal to ##\pm \sqrt{y}## or x is equal to ##\pm \sqrt{\pm \sqrt{y}}## ? Well, I think that x...
Apr15-14 09:54 AM
5 234
If I want to discuss Black–Scholes formula, where should I post?
Apr14-14 11:52 PM
1 190
Ok! So I know Newton and Leibniz invented Calculus independently and today a major part of maths requires calculus....
Apr14-14 12:54 PM
16 690
Hello may i know when to dot product and cross product?? both look to same to me..
Apr14-14 10:51 AM
2 232
It's been a while since I've dealt with sequences and series. Here is my explanation of sequences and series and let...
Apr14-14 09:44 AM
5 290
Guys, waterloo contest is coming in next week, do you guys prepare for it?
Apr13-14 06:17 PM
1 188
Is correct the following procediment? ## A \sin (\omega t) = A \sin (\phi) \to \phi= \sin^{-1} \sin (\omega t )## ...
Apr13-14 03:50 PM
2 228
just a quick question. why is two prime if its has factors, (1+i) and (1-i)?
Apr13-14 01:13 PM
8 276
Hi, My Complex Euler stuff is a bit rusty but I'm working on a problem (that I won't mention here) but I'm after an...
Apr13-14 05:18 AM
12 288
Does anyone know any cheap (preferably free) software or online tools for plotting reasonably complicated Cartesian...
Apr13-14 04:00 AM
Martin Zhao
5 238
Let's say A and B are 2 vectors with length in cm and the angle between them is 170°. Obviously, the dot product of...
Apr12-14 10:21 AM
2 229
I am having a hard time understanding the concepts of a universal property :\ What are they used for? Do they...
Apr12-14 09:48 AM
16 442
It is basically a question in computer graphics but I guess math sub-forum will suit this question. While rotating...
Apr12-14 12:04 AM
Stephen Tashi
3 263
What does the Fc and Vc stand for in this equation? Fc = Vc over Wavelength
Apr11-14 05:11 PM
1 217
In my textbook, it states that given q1 and q2 where both charges are positive and of equal magnitude, the unit vector...
Apr11-14 01:31 PM
Doc Al
20 421
If we have a function such as, $$e=\sum_{n=0}^{\infty} f(k)$$ Where 'k' can be (almost) any real value we choose...
Apr11-14 12:06 PM
27 1,212
Is it possible to create a solid whose sides are all quadrilaterals, and whose vertices are all bringing together four...
Apr10-14 09:35 PM
1 252
Digging in the wiki, I found this relation between 'arc-functions' and 'arc-functions-hyperbolics" \\ arcsinh(x)= i...
Apr10-14 03:32 PM
11 530
Is possible to compute the rate of change of x wrt sin(x)? ##\frac{dx}{d \sin(x)}##
Apr10-14 11:40 AM
11 413
So i have an equation to calculate the impossibility of pair production during photon decay into two electrons and I'm...
Apr10-14 08:39 AM
1 221
Why is the slope of perpendicular line on the the other defined this way: m = slope of a particular line m'= slope...
Apr9-14 08:36 AM
Simon Bridge
4 260

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