# Fourier series question

• May 16th 2013, 02:27 AM
Brennox
Fourier series question

Cheers
• May 16th 2013, 02:51 AM
zzephod
Re: Fourier series question
Quote:

Originally Posted by Brennox

Cheers

For the first question look up the definition of Fourier series given in your notes or text book.

For question 2 apply the correct answer to question 1 to the given function.

If you are still having trouble post what yuou have done and what the problem is for further help.

.
• May 16th 2013, 06:03 AM
Brennox
Re: Fourier series question
Quote:

Originally Posted by zzephod
For the first question look up the definition of Fourier series given in your notes or text book.

For question 2 apply the correct answer to question 1 to the given function.

If you are still having trouble post what yuou have done and what the problem is for further help.

.

So ive worked out that the answer is B for part one, the one with 1/(pi) in front

can you help me out with the 2nd part, cheers
• May 16th 2013, 06:49 AM
Brennox
Re: Fourier series question
Quote:

Originally Posted by zzephod
For the first question look up the definition of Fourier series given in your notes or text book.

For question 2 apply the correct answer to question 1 to the given function.

If you are still having trouble post what yuou have done and what the problem is for further help.

.

I have found out i need to do this... SF_f(x) = a_0/2 + a_1 cos(x) + a_2 cos(2x) + b_1 sin(x) + b_2 sin(2x)

i got SF_f(x) = a_0/2 + 18 + 0 + 0 + 0

is this right? i tried 18, 22.5 and 27 all wrong answer