3 Let f (x) = - x2 + 7a + 12 .DO (a) (3 Marks) Use a comparison test to show that f(x) dx converges.
3 Let f (x) = - x2 + 7a + 12 .DO (a) (3 Marks) Use a comparison test to show that f(x) dx converges. A B (b) (3 Marks) Find A and B so that f(x) = + As always, show all your work. x+3 x +4 (c) (4 Marks) Find
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