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Math Help - square root integral

  1. #1
    Newbie
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    square root integral

    intergral (1)/((9-x^2)^(3/2))dx
    Looks almost like arc sin to me but its cubed
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  2. #2
    Senior Member Peritus's Avatar
    Joined
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    use the following substitution:


    x = 3\sin u<br />
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  3. #3
    Math Engineering Student
    Krizalid's Avatar
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    You can also avoid trig. with the reciprocal substitution.
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