Question 2 - A-Level Maths

Exam Board	CAIE
Module	P1 (Pure Mathematics 1)
Year	2011
Session	November
Topic	Differentiation Applications
Type	Increasing/decreasing intervals

2 A curve has equation \(y = 3 x ^ { 3 } - 6 x ^ { 2 } + 4 x + 2\). Show that the gradient of the curve is never negative.