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Thread: Complex number expression??

  1. Nov 19th 2008, 03:47 PM #1
    live_laugh_luv27
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    Question Complex number expression??

    Write an expression for the sum of a complex number a + bi and its complex conjugate.

    Thanks for any help!
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  2. Nov 19th 2008, 03:53 PM #2
    Mathstud28
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    Quote Originally Posted by live_laugh_luv27 View Post
    Write an expression for the sum of a complex number a + bi and its complex conjugate.

    Thanks for any help!
    Let z=a+bi and \bar{z}=a-bi then z+\bar{z}=\left(a+bi\right)+\left(a-bi\right)=2a=2\Re(z)
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