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Math Help - intergrate

  1. #1
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    intergrate

    (5)/(x^2 sqrt(9x^2-1))dx
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  2. #2
    Math Engineering Student
    Krizalid's Avatar
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    Set x=\frac1u.
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  3. #3
    Senior Member Peritus's Avatar
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    <br />
x = \frac{1}<br />
{3}\cosh u<br />
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