Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Real and imaginary parts of an expression

  1. Feb 5, 2010 #1
    can anyone tell me how to get the real and imaginary parts of the following function :

    (x+ i y)* Log( a+i b) where x, y a and b are all real numbers and i =sqrt (-1).

    Thanks very much
  2. jcsd
  3. Feb 5, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper

    Recall that Log(z) = ln|z| + iArg(z). When you write it like that, it is easy to separate the expression into real and imaginary parts.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook