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3 Question 3 5 pts The first derivative f'(x) of a certain function f (x) is given. In each case, find intervals on which the

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Question 3 5 pts The first derivative f'(x) of a certain function f (x) is given. In each case, find intervals on which the graph of fis concave up and concave down. f'(x) = x2+ 4x - 45 O concave up for x -2. O concave up for -9 5. O concave up for x 5; concave down for -9 -2; concave down for x

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