For each function in Exercises, find (a) The critical numbers; (b) The open intervals where the function
Question:
For each function in Exercises, find
(a) The critical numbers;
(b) The open intervals where the function is increasing; and
(c) The open intervals where it is decreasing.
ƒ(x) = x4 + 4x3 + 4x2 + 1
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