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Homework Help: Why cant I remember how to integraTE

  1. Mar 1, 2008 #1
    [SOLVED] why cant I remember how to integraTE

    [tex]x^2lnxdx[/tex] ? I can't find a formula that matches up?
     
  2. jcsd
  3. Mar 1, 2008 #2
    You want help to Integrate it or just saying why can't you remember the table formula and you want someone to give it to you?

    [tex]\int x^2\ln xdx[/tex]

    Integrate by Parts: [tex]I=uv-\int vdu[/tex]

    [tex]u=\ln x[/tex]
    [tex]du=\frac{dx}{x}[/tex]

    [tex]dV=x^2dx[/tex]
    [tex]V=\frac 1 3 x^3[/tex]
     
    Last edited: Mar 1, 2008
  4. Mar 1, 2008 #3
    Are you answering my question, or just asking me to restate the original.
     
  5. Mar 1, 2008 #4

    HallsofIvy

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    Science Advisor

    Smoking funny cigarets? Drinking too much? Misplaced capitals syndrome?
     
  6. Mar 1, 2008 #5
    cigarets spelled like that must be funny! Anyway, by parts it is. Thanks B.
     
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