CPM Homework Help : CALC Problem 9-133

Find $\frac { d } { d x } \int _ { 4 } ^ { 6 x ^ { 2 } - 2 } ( 9 \sqrt { t - 1 } ) d t$ .

Hint:

You will need to use the Chain Rule.
Let $a = 4$ and $b = 6x^2 – 2$ .
$(9\sqrt{b-1})(b^\prime)-(9\sqrt{a-1})(a^\prime)$