### Home > CALC > Chapter 7 > Lesson 7.4.2 > Problem 7-185

7-185.

Let *U* = tan^{−1}*x*.

Use Integration by Parts;

If *f*(*x*) = *x* and *dg* = cos*x dx*,

then *df* = ___ and *g*(*x*) = ____.

Evaluate and solve.

Write this integral as the sum of two improper integrals.