- #1
Invyz
- 14
- 0
Homework Statement
Attached.
Homework Equations
The Attempt at a Solution
For #1: I've attempted to use the identity sin(x)sin(y) = 1/2(cos(x-y)-cos(x+y)) and the similar related identities for sin(x)cos(y) and cos(x)cos(y), but I end with answers that are undefined when m = n due to the term (m-n).
For #2: I don't see any derivation in the lecture notes(attached), so I don't know where to start :/ Other than that you probably begin with the summation as n goes to infinity of the Fourier constant times the cosine(2*pi*n*t/T)