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Definite Integral Homework

  1. May 3, 2008 #1
    Consider the Integral: a=0 b=1 (x^2)(sqrt(9x+8))dx

    Does u=(9x+8) ?
    can we factor out the x^2?

    We have to give the value that the definite integral is
     
  2. jcsd
  3. May 3, 2008 #2
    you have to use integration by parts. you want

    u= 9x+8
    du=9dx
    v= (x^3)/3
    dv=x^2dx

    then figure out [ uv - integral of (vdu) ]
    (x^3)/3 * (9x+8) - integral of [ (x^3)/3 * 9dx)]
     
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