Consider the function f(x) = x2 - 9 (a) Find the domain of f. (Enter your answer using interval notation.) (-00, – 3) U (-3,3)U(3,00) (b) Find the intervals on which fis increasing. (Enter your answer as a comma-separated list of intervals.) (-00,0) Find the intervals on which f is decreasing. (Enter your answer as a comma-separated list of intervals.) (0,00) (c) Find the open intervals on which f is concave up. (Enter your answer as a comma-separated list of intervals.) (-3,3) Find the open intervals on which f is concave down. (Enter your answer as a comma-separated list of intervals.) (-00, - 3) U (3,00) (d) Find the vertical asymptotes of f. smaller x-value X = -3 larger x-value

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