Identify the sign change in around a critical point that indicates is a point of…

MATHEMATICS · Single correct · A Level · Mathematics · Differentiation · Differentiation

Problem

Identify the sign change in

f'(x)

around a critical point

c

that indicates

c

is a point of local maximum of

f

. (a) from negative to positive (b) from positive to negative (c) remains positive on both sides (d) from positive to zero