CPM Homework Help : CALC Problem 8-63

At which point(s) on f(x), graph below, do the following situations occur? Homework Help ✎
1. f ′(x) and f ′′(x) are both positive
2. f ′(x) and f ′′(x) are both negative
3. f ′(x) is positive and f ′′(x) is negative
4. f ′(x) is negative and f ′′(x) is positive

Hint (a):

Translation: slope of f(x) is positive AND f(x) is concave up.

Hint (b):

Refer to the hint in part (a).

Hint (c):

Refer to the hint in part (a).

Answer (d):

Points e and a.