How Do I Start This

[Mikey]

How would I start this problem to find the answer?

Decide if the given value of x is a critical number for f, and if so, decide whether the point for x on f is a relative minimum, relative maximum, or neither.

f(x) = 2x^3 - 3x^2 - 12x + 18; x = 2

 

[pka]

START by looking at f'(2) & f"(2).