### Home > CALC > Chapter 10 > Lesson 10.3.1 > Problem 10-118

10-118.

Rewrite the integrand in terms of sine and cosine and use the Pythagorean Identity.

Let *u* = cos(*x*).

Use integration by parts: Let *f* = tan^{–1}(*x*) and *dg* = *x dx*

Use polynomial division:

Use substitution: Let *u* = ln(*x*)

Use substitution: