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Math Help - do i solve it using integ. by parts method?

  1. #1
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    Question do i solve it using integ. by parts method?

    integral [sqrt(X) . ln(x)]


    thanx
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  2. #2
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    Quote Originally Posted by alex83 View Post
    integral [sqrt(X) . ln(x)]


    thanx
    Yes. u = \ln x,\; dv = \sqrt{x}
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  3. #3
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    Question does it look right ?

    Quote Originally Posted by danny arrigo View Post
    Yes. u = \ln x,\; dv = \sqrt{x}
    thanks for replying that was helpful
    would u pls tell me if the answer i got is right ??

    2/3[lnx. x^(3/2)]-(4/9)(x^(3/2))

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  4. #4
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    \int\sqrt{x}\log x dx = \frac{2}{3}\sqrt{x}^3\log x - \frac{2}{3}\int \sqrt{x}dx
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  5. #5
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    Quote Originally Posted by alex83 View Post
    thanks for replying that was helpful
    would u pls tell me if the answer i got is right ??

    2/3[lnx. x^(3/2)]-(4/9)(x^(3/2))

    You can check answers by differentiating them. Do you get back the integrand?
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