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Math Help - complex variable!

  1. #1
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    complex variable!

    hello guys, wondering why this expression

     -\mid(-Z)\mid should give +Z while  -\mid-Z\mid should give -Z

    pls i need reassurance on this, thanks
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  2. #2
    MHF Contributor
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    Re: complex variable!

    If |u| denotes the absolute value of u, then -|(-z)| and -|{-z}| are the same expression, and it is not true that -|{-z}|=z or -|{-z}|=-z for all complex z.
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