# Definite Integral with tricky deniminator

1. Nov 25, 2012

### kf00zy

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

I attached problem as a picture.

2. Relevant equations

I know that the integral of 1/x equals lnx if the derivative of the denominator is equal to the numerator.

3. The attempt at a solution

I tried to foil out the denominator and integrate by parts but it was very difficult. Is there an easier way?

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2. Nov 25, 2012

### CAF123

There is a much easier way. Try a substitution.

3. Nov 25, 2012

### kf00zy

Haha, forgot about substituting.. clearly my calculus is rusty. Thanks!