- #1
Drain Brain
- 144
- 0
I just want to know how do I determine the number of terms will be in this summation. The answer to this 2N+1 terms. I can only arrive at preliminary steps of solving this. can you tell why 2N+1 is the number of terms? I know that the magnitude of complex exponential function squared would result to one.
$\sum_{n=-N}^{N}|e^{J\frac{\pi}{4}n}|^2$