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Find x

  1. Feb 28, 2005 #1
    hey ....
    back with a nice question

    find (x) ...
    (sin x )^6 + (cos x) ^6 = 5/6 ( (sin x)^4 + (cos x)^4)

    cheers
     
  2. jcsd
  3. Feb 28, 2005 #2

    dextercioby

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    x_{1}=3pi/8;x_{2}=-3pi/8;x_{3}=pi/8;x_{4}=-pi/8

    Daniel.
     
  4. Feb 28, 2005 #3
    You have posted this question twice.

    The Bob (2004 ©)
     
  5. Feb 28, 2005 #4
    So how did you get the answer?
     
  6. Feb 28, 2005 #5

    dextercioby

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    Used Maple.I have a horrible headache which prevented me from making tricks and substitutions to solve it...

    Daniel.

    P.S.The problem is really trivial.It's not a brain teaser in any way.
     
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