The derivative of a function satisfies • for for State the intervals on which is

MATHEMATICS · Subjective · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives

Problem

The derivative of a function

f

satisfies •

f'(x)>0

for

x<-2

•

f'(x)<0

for

-2<x<4

•

f'(x)>0

for

x>4

State the intervals on which

f

is (i) increasing and (ii) decreasing.