I'm trying to learn \LaTeX, and so far I'm doing fine. However, I would like to know if it is possible to be able to find out if a particular environment is in use at a certain point. Basically, I was wondering if something like:
exists in LaTeX. Does anyone...
Consider the system X' = f(X), where X is a square matrix. I would like to solve this system with MATLAB, but all of its solvers require X to be a column vector.
Of course, it would be possible to rewrite X' and f(X) as column vectors, but I guess some efficiency would be lost. It...
Suppose I have a MATLAB function that returns two (or more) output arguments, but I only care about the second one, and I do not wish to assign the value of the first one to a variable.
What bugs me is when, for example, I solve an ODE:
[t, x] = ode45(blablabla)
Fourier transform --> power spectrum
I've been learning about the discrete Fourier transform (and FFT too) recently. What I don't understand is why applying it to a signal gives its power spectrum. I am not really good in physics, so to me it just seems like a magical formulae, one...
I love geometry :)
This is one problem I haven't been able to solve. I've had a class on theorems relative to circles and triangles but I still can't figure this one out.
3 identical, equilateral triangles are placed as seen on the attachment. Their sides measure 28cm, and the...
I'm having trouble setting initial conditions when solving differential equations in Maple. Here's the equation:
\theta(t)''+4\pi^2 sin(\theta(t))=0, with \theta(0)=A and \theta'(0)=B as initial conditions.
I'd like to solve it with a command like...
I'm a math students, and I've got physics homeworks to do, and... I need some help :smile:
To make it short, I solved the approximation of the differential equation of the angle of a pendulum in function of time, and I got this...
I'm having a hard time proving something. Let's say you have a triangle with a 90° angle. How can I prove that the lenght of the segment between the middle of the hypotenuse and the 90° angle is half the lenght of the hypotenuse itself?
Here's a little pic to help you...