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Homework Help: Show an equality is true

  1. Dec 22, 2005 #1
    How could I show that this is true:
  2. jcsd
  3. Dec 22, 2005 #2


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    Science Advisor
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    What have you tried?
  4. Dec 23, 2005 #3

    Doc Al

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    Staff: Mentor

    Where does that expression come from? It doesn't look true to me. (Plug in a few values and see for yourself.)
  5. Dec 24, 2005 #4
    yeah, it's not true...well, that makes it easy to show it's not true.
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