Goal: Find the integral f 45:}:4 cos (43:5){132 using the technique of usubstitution. 1. Letu : C] . Then do. = C] dm. 2. Performing the substitution yields the following integral in terms of u: I: which in terms of it has the antiderivative 3. Therefore, in terms of 1?, f "-152:4 cos (42:5)d1: equals :W