### Home > CALC > Chapter Ch7 > Lesson 7.4.3 > Problem 7-199

7-199.

Examine the integrals below. Consider the multiple tools available for integrating and use the best strategy. After evaluating each integral, write a short description of your method. Homework Help ✎

Rewrite properly (with limits) before evaluating.

Use integration by parts after you rewrite the integrand as arctan(*x*).

Let *f*(*x*) = arctan(*x*) and *dg* = *dx*.

Then *df* = _______ and *g*(*x*) = _______.

Warning: You will have to use *U*-substitution to evaluate the integral.