Let . Which of the following points is a local minimum of…

MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives

Problem

Let

f(x)=x^{3}-6x^{2}+9x+5

. Which of the following points is a local minimum of

f

? (a)

(2,7)

(b)

(3,5)

(c)

(1,9)

(d)

(3,9)