Question

Fourier Series Help

Answer 1

Yes, okay.
Invisible question?

Answer 2

Sorry @eta, I posted something below but it doesn't seem to have appeared.

So my question is this: http://i.imgur.com/vKjl0zM.png

This is my first time ever properly using matlab and I'm still new to fourier series, but does this look like a valid answer?

http://i.imgur.com/vKjl0zM.png

Answer 3

Oops, posted the same link twice. Here's the graph: http://i.imgur.com/NLoAZop.png

Answer 4

It isn't meant to say square wave, I forgot to change the title from the last question.

Answer 5

For N=20 (terms), for 0<x<pi, it look like this

Answer 6

Thanks, phi. What did you use to plot that? We don't have to use matlab but I thought of it as the de facto software to use.

Answer 7

matlab

Answer 8

Thanks, how am I meant to plot these in matlab? My code currently looks like this:

N = 20;
x = [0,pi];
f = 0;

for n = 1:1:N
f = f + (4/pi) * sin((2*n*x-x)/(2*n-1));
end

plot(x,f)


But that's not giving me a remotely correct answer so I'm a bit stuck

Answer 9

I've managed to see my mistake, I had a typo in my equation (should be sine of the numerator not the whole fraction). Thanks for your help!