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Homework Help: Complex numbers problem need help

  1. Nov 21, 2007 #1
    complex numbers problem....need help

    Hi all
    Could anyone out there please help me with the solution to this problem.

    Express 2.91e to the power of 1+j2 in Cartesian form (x+jy)

    Sorry writing it out, but I don't know how to set it out on the computer.

    I have tried solving the 1+j2 first then adding this to the real number then working it out in polar form then converting it to Cartesian, but I don't know if this is right.

    Any help would be much appreciated.
    Thank you
  2. jcsd
  3. Nov 21, 2007 #2


    User Avatar

    Staff: Mentor

    You should start by separating the two parts of the complex exponential:

    [tex]2.91 e^{1+j2} = 2.91{e^1} {e^{j2}} [/tex]

    and then use Euler's formula on the [tex] {e^{j2}} [/tex] part.... Does that help?


  4. Nov 21, 2007 #3
    Thank you

    I shall give it a go.
    Thank you for your help
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