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: How did they rewrite this?

  1. Oct 13, 2009 #1
    How did they rewrite this?

    A = 1 / (-2 + 4i)

    A = -(1/10) - (1/5)i
     
  2. jcsd
  3. Oct 13, 2009 #2
    Multiply the numerator and denominator of A by the complex conjugate of -2 + 4i
     
  4. Oct 13, 2009 #3
    That's what I was thinking but wasn't sure. I haven't had to do that in a long time. lol.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook