Today we went over some of the more difficult homework problems. May of them required you to use a trig identity to simplify the integral before you could find an antiderivative. Make sure you know the trig identities. It will make your life easier. Really. Homework was a mixed review. You need to decide what method to use to find either area between two curves (integrate w/r/t x or w/r/t y) or to find the volume of a solid (discs or washers). The assignment and answers are attached. (answers are after the assignment.)
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