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shaqadry

  • one year ago

integrate e^(x-1/x) / x^2 dx

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  1. LACHEEK989
    • one year ago
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    let x-1/x = u. Solving for du takes care of the denominator.

  2. RadEn
    • one year ago
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    first, simplify for (x-1)/x = x/x - 1/x = 1 - 1/x = 1 - x^(-1) u = 1 - x^(-1) du = x^(-2) dx or du = dx /x^2

  3. RadEn
    • one year ago
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    wait, which one ur problem : |dw:1361528752446:dw|

  4. RadEn
    • one year ago
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    the first, or the last one

  5. shaqadry
    • one year ago
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    the second one. you just solved my question. already got the answer. thank you very much!! :)

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