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I Confused about complex numbers

  1. Apr 7, 2017 #1
  2. jcsd
  3. Apr 7, 2017 #2

    mfb

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    Staff: Mentor

    ##|a+b|^2 = (a+b)(a+b)^* = aa^* + bb^* + a^*b + ab^*= |a|^2 + |b|^2 + a^*b+ ab^*## where * is the complex conjugation.
     
  4. Apr 7, 2017 #3
    Thanks you!
     
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