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Homework Help: Derivative, can you check my answer please?

  1. Oct 18, 2009 #1
    1. The problem statement, all variables and given/known data
    [tex]y= 4^x + 9/x^3[/tex]

    2. Relevant equations


    3. The attempt at a solution
    [tex]y'= ln(4)4^x-27x^-^4[/tex]
     
  2. jcsd
  3. Oct 18, 2009 #2
    That's correct.
     
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