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Thread: simple conjugate question

  1. December 7th 2011, 01:22 PM #1
    nerdygirl
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    simple conjugate question

    Hi all,

    what is the conjugate of A + A exp(-i)+ B exp(-2i)

    regards,
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  2. December 7th 2011, 01:28 PM #2
    TheEmptySet
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    Re: simple conjugate question

    Quote Originally Posted by nerdygirl View Post
    Hi all,

    what is the conjugate of A + A exp(-i)+ B exp(-2i)

    regards,
    The conjugate of

    e^{ix}, x \in \mathbb{R} is

    \overline{e^{ix}}=\overline{\cos(x)+i\sin(x)}=\cos (x)-i\sin(x)=e^{-ix}

    Use this to finish the problem.
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