X In problems 1 -4, the function f is given by a graph, and A(x) = J f(t) dt . (a) Graph y = A(X) for 1 x $5. (b) Estimate the values of A(1), A(2), A(3), and A(4). (c) Estimate the values of A'(1), A'(2), A'(3), and A'(4). 1. f in Fig. 11. 2. f in Fig . 12. 3. f in Fig. 13 4. f in Fig . 14. y = f(t) y = f(t) 3 . 3 y = f(t) y = f(t) w U 2 2 2 1 2 3 4 5 1 2 3 4 1_2 3 4 5 1 2 3 4 5 Fig. 13 Fig. 11 Fig. 12 Fig. 14