Question

if f is differentiable in [a,b] then it is monotonically decreasing if ​

Answer 1

Step-by-step explanation:

Theorem 2 Let f be a differentiable function on an open interval (a, b). If f/(x) > 0 for all x in (a, b), then f is increasing on (a, b). If f/(x) < 0 for all x in (a, b), then f is decreasing on (a, b).