Preliminary steps The following integrals require a preliminary step such as long division or a change of variables before using partial fractions. Evaluate these integrals.

Problem 59EThe following integrals require a preliminary step such as long division or a change of variables before using partial fractions. Evaluate these integrals.Solution:-Step 1Arranging the integral as follows, = = Now, substituting Differentiating , we getPutting these values in I, we get = Putting back the value of , we getThus, the integration of is .