# To find the sum of a fourier series ?

to find the sum of a fourier series....?

My problem is:

I must find the sum of ((-1)^(n+1))/2n-1 between infinity and n=1.

I have looked in all my available textbooks for a clear example but im still unsure as to how i should approach the problem?

Help with this would be much appreciated.

Thankyou.

Dick
Homework Helper
Do you really have to sum it, or just show it converges? The former is easy. I'm not sure how to do the latter unless someone can think of a taylor series that resembles your series.

Dick