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Homework Help: Integration by substitution problem

  1. May 14, 2012 #1

    madmike159

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    Gold Member

    1. The problem statement, all variables and given/known data

    Using a suitable substitution find the solution to:

    ∫ (x+2)50(x+1)dx


    2. Relevant equations



    3. The attempt at a solution

    I can't find a solution to this using substitution. Wolfram alpha give an answer that is too long to be calculated by hand. Can anyone work out the solution, or is there a mistake in the question which means it can't be solved?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. May 14, 2012 #2

    sharks

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    Gold Member

    [tex]Let\; u=x+2[/tex]
     
  4. May 14, 2012 #3

    HallsofIvy

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    Science Advisor

    What do you get if you let u= x+ 2? That seems to me to be the obvious substitution. It is certainly not "too long to be calculated by hand".
     
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