Integrals using u substitution

  • #1

Homework Statement



Using substitution, find the integral of 32x2/(2x+1)3

Homework Equations





The Attempt at a Solution



I initially tried plugging u in for 32x2 but that wouldn't work because it won't cancel out with the problem below it anyway. I'm pretty sure we are not expected to multiply the bottom function out, so how would I go about doing this?
 

Answers and Replies

  • #2
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0
use partial fractions
 
  • #3
Dick
Science Advisor
Homework Helper
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Just use u=2x+1. You would have to do it anyway after partial fractions. So x=(u-1)/2. Then just expand the numerator.
 

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