Fourier Transforms of Trig Functions

kiwijoey · #1 $Old$ October 5th, 2009, 05:34 PM

Find the Fourier Transform of f(x) = sin(nx) for n a real number.

Find the Fourier Transform of f(x) = cos^2(nx) for n a real number.

CaptainBlack · #2 $Old$ October 6th, 2009, 04:00 AM

Quote:

Originally Posted by kiwijoey $View Post$

Find the Fourier Transform of f(x) = sin(nx) for n a real number.

Find the Fourier Transform of f(x) = cos^2(nx) for n a real number.

Well what have you tried?

(start by writing out the integral defining the transform for these functions, and think "delta")

CB