Let , where is a real constant. Find all real values of such that is increasing on…

MATHEMATICS · Subjective · A Level · Mathematics · Differentiation · Differentiation

Problem

Let

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

, where

a

is a real constant. Find all real values of

a

such that

f

is increasing on the interval

[1,\infty)