CPM Homework Help : CALC Problem 7-133

Set up each integral in terms of $u$ . Be careful of the bounds. You do not need to solve the problem.

$\int _ { 0 } ^ { 2 } x e ^ { 3 x ^ { 2 } } d x$
Hint (a):
Let $u = 3x^²$ . Write a new integrand AND write new bounds.

$\int _ { - 2 } ^ { 3 } \frac { 5 x ^ { 2 } } { x ^ { 3 } + 1 } d x$
Hint (b):
Remember that the current bounds are $x$ -values. They need to be converted to $U$ -values.