### Home > CALC > Chapter 7 > Lesson 7.3.3 > Problem 7-133

7-133.

Set up each integral in terms of

*u*. Be careful of the bounds. You do not need to solve the problem. Homework Help ✎

Let *u* = 3*x*². Write a new integrand AND write new bounds.

Remember that the current bounds are *x*-values. They need to be converted to *U*-values.