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There's probably a misprint, it should be:z = cos + isin, show that z^n+ 1/z^n= 2cos
Originally posted by Ragerunner
Modulus = 1
Argument = 0
1 = 1e^2kipi
So that's just
1 = 1cis2kpi
Thanks for the help.
Please, please use brackets.Originally posted by Teoh
1 = 1cis2kpi