1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Show the real part is zero

  1. Apr 10, 2009 #1
    1. The problem statement, all variables and given/known data
    (z+1)^100=(z-1)^100 z is complex

    2. Relevant equations

    3. The attempt at a solution

  2. jcsd
  3. Apr 10, 2009 #2


    User Avatar
    Homework Helper

    Now use exp(ix)=cosx+isinx and multiply by the complex conjugate of the denominator.
  4. Apr 10, 2009 #3
    Word. I think I was just tired. I feel dumb for not seeing that.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook