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**fattydq** I've attached a picture of the problem I'm working on involving evaluating integrals, I know how to do it visually (if I have a drawn graph in front of me or can draw a graph) which is how I got the correct answer to #1 that you see there, but when the numbers get too huge too simply graph I have no idea how to go about solving these kinds of problems, I've looked through my notes and book and can't make sense of all the steps they're giving me, could someone help me out?