Question 3 - A-Level Maths

Exam Board	CAIE
Module	P3 (Pure Mathematics 3)
Year	2004
Session	June
Topic	Implicit equations and differentiation

3 Find the gradient of the curve with equation $$2 x ^ { 2 } - 4 x y + 3 y ^ { 2 } = 3$$ at the point $( 2,1 )$.