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zheng89120
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Homework Statement
Prove that [itex]\Sigma[/itex][itex]^{n}_{k=1}[/itex] wk = 0
and there has to be at least two phasors/exponentials
Homework Equations
complex analysis
The Attempt at a Solution
I tried writing out the sigma on the first line.
Then I tried writing the same thing with n+1 on the second line.
Then I tried to divide the first exponential of the n+1 line by the first exponential of the first line, called A.
Then I divided the bottom by A, which should factor to get the first line as a factor, but could still not get the first line from the n+1, second line.