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Homework Help: Derivative of sin(x^2cos(x))

  1. Feb 5, 2013 #1
    1. The problem statement, all variables and given/known data

    Derivative of sin(x^2cos(x))

    2. Relevant equations

    Product rule and chain rule

    3. The attempt at a solution
    [cos(x^2cos(x)) * (2x)(cos(x)) + (x^2)(-sin(x))]

  2. jcsd
  3. Feb 5, 2013 #2
    Your answer is very close. The (2x)(cos(x)) + (x^2)(-sin(x)) should be in brackets which is being multiplied by cos(x^2cos(x)). It should look like:

    ##cos(x^2cos(x))[(2x)cos(x) - x^2sin(x)]##
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