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Math Help - Some Integration Problems

  1. #1
    Junior Member
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    Some Integration Problems

    Hey everyone, I have a couple of questions on integration:

    1. \int x(lnx)^4dx

    2. \int arctan(7z)dz

    Thanks for any help you can give me.
    Peter
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  2. #2
    MHF Contributor Unknown008's Avatar
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    For the first one, use integration by parts,

    u = (lnx)^4

    dv = x

    For the second one, I think a substitution is required... *checking*

    EDIT: Yes take atan(7z) = u

    Then,

    7z = tan u

    7dz = sec^2u\ du
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