Evaluate the integral using substitution

Thread starter Econometricia
Start date Apr 20, 2010
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Integral Substitution

Apr 20, 2010

Econometricia

1. Evaluate the integral [0,ln(3)] of ff(x)=(e^2x + 1)^2 /e^x

I am having trouble locating what to substitute.

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Apr 20, 2010

Mark44

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No need for a substitution. Just expand (e^2x + 1)² and divide each term by e^x.

Apr 20, 2010

Econometricia

haahah. Thank you Mark.Final exam time I think I'm loosing it.
Reminded me of http://jacobyap.com/wp-content/uploads/2010/02/math06.gif

Last edited: Apr 20, 2010

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