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Trig sub integral

  1. Sep 18, 2008 #1
    Problem Statment:
    Int (32/((x^2)(sqrt(16-(x^2)))))dx

    Problem Attempt:
    a = 4 x = 4sin(w) w = theta
    dx = 4cos(w)

    Worked the problem down to:
  2. jcsd
  3. Sep 19, 2008 #2


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    Hi RUStudent! :smile:

    (have an integral: ∫ and a square-root: √ and a squared: ² :smile:)

    erm … how about 1/sin²w = cosec²w? :redface:
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