For the Function ​ (A)Find the Critical Numbers of F

For the function ​ (a) Find the critical numbers of f (if any) ;
(b) Find the open intervals where the function is increasing or decreasing; and
(c) Apply the First Derivative Test to identify all relative extrema.
​

A) (a)
(b) increasing: ; decreasing:
(c) relative max: ; relative min:
​
B) (a)
(b) decreasing: ; increasing:
(c) relative min: ; relative max:
​
C) (a)
(b) increasing: ; decreasing:
(c) relative max: ; relative min:
​
D) (a)
(b) decreasing: ; increasing:
(c) relative min: ; relative max:
​
E) (a)
(b) increasing: ; decreasing:
(c) relative max: ; relative min: no relative min.
​