A curve has the equation 2x2+5xy+2y2=92x^2 + 5xy + 2y^2 = 92x2+5xy+2y2=9:
Find an expression for dydx\displaystyle \frac{dy}{dx}dxdy
Find an equation for the normal to the curve at the point (1,1)(1, 1)(1,1)
Practise Edexcel A Level Maths 9.8 Implicit Differentiation with exam-style questions for A Level Maths. 48 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
