What is the first derivative of sec^2x?

  1. i know that d(sec ax)dx = a tan ax sec ax... help?
     
  2. jcsd
  3. Curious3141

    Curious3141 2,970
    Homework Helper

    Apply chain rule. Specifically, [tex]\frac{d}{dx}{(f(x))}^2 = 2f'(x)f(x)[/tex]
     
    Last edited: May 10, 2006
  4. duh *slaps forehead* thanks!
     
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