Question: In below Problems, a function and its graph are given. (a) Use the graph to determine (estimate) x-values where f'(x) > 0, where f'(x) (b)

In below Problems, a function and its graph are given.

(a) Use the graph to determine (estimate) x-values where f'(x) > 0, where f'(x) 

(b) Use the graph to determine x-values where f''(x) > 0, where f''(x) 

(c) Check your conclusions to (a) by finding f'(x) and graphing it with a graphing calculator.

(d) Check your conclusions to (b) by finding f''(x) and graphing it with a graphing calculator.

1. f(x) = x3- 4x2 + 4x

-2 -3

2. f(x) = 0.0025x4+ 0.02x3 - 0.48x2 + 0.08x +4

40 -20 20 -60

-2 -3 40 -20 20 -60

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