Use Parseval's equality - We are using the book Methods of Real Analysis by Richard R. Goldberg
(See attached file for full problem description)
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12.5-2
Show that the Fourier series for is
a) U ...
Using induction to prove an equality - I want to use induction to prove this equality:
1 + z + z^2+...+z^n = (1 - z^(n+1))/(1 - z) for every n >= 1
How do I go about this? I started out by letting z = (a + bi), but got confused.