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Show the real part is zero

  • Thread starter oab729
  • Start date
  • #1
12
0

Homework Statement


(z+1)^100=(z-1)^100 z is complex


Homework Equations





The Attempt at a Solution



(z-1)/(z+1)=e^(i2pi(k/100))
 

Answers and Replies

  • #2
rock.freak667
Homework Helper
6,230
31
Now use exp(ix)=cosx+isinx and multiply by the complex conjugate of the denominator.
 
  • #3
12
0
Word. I think I was just tired. I feel dumb for not seeing that.
 

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