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tux Group Title

I don't understand the highlighted part of solution http://i.imgur.com/0quFs.png

  • 2 years ago
  • 2 years ago

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  1. hartnn Group Title
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    hint: use of distributive property (x+y)*(w+z)= x*w + x*z + y*w + y*z does this help ?

    • 2 years ago
  2. tux Group Title
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    This is what I got after using distribution: (A∩A^c)U(A∩B^c)U(B∩A^c)U(B∩B^c) As you can see I got (A∩A^c) In solution it is (AUA^c)

    • 2 years ago
  3. hartnn Group Title
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    @tux u are absolutely correct there is printing mistake in that step, then again next step there is correct

    • 2 years ago
  4. hartnn Group Title
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    because A∩A^c is null as shown there.

    • 2 years ago
  5. tux Group Title
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    A U A^c = U A∩A^c={} You are right. Thanks

    • 2 years ago
  6. hartnn Group Title
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    ^^ thats right too. welcome :)

    • 2 years ago
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