A curve has the equation 2x2−xy+3y+y2=102x^2 - xy + 3y + y^2 = 102x2−xy+3y+y2=10:
Find an expression for dydx\displaystyle \frac{dy}{dx}dxdy
Find an equation for the tangent to the curve at the point P(2,1)P(2, 1)P(2,1)
Practise Edexcel A Level Maths 9.3 The Chain Rule with exam-style questions for A Level Maths. 50 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.