The curve C C\,C has the equation x=12tany\displaystyle x = \frac{1}{2} \tan yx=21tany
Find dxdy\displaystyle \frac{dx}{dy}dydx in terms of yyy
Hence find dydx\displaystyle \frac{dy}{dx}dxdy in terms of xxx
Practise Edexcel A Level Maths 9.7 Parametric Differentiation with exam-style questions for A Level Maths. 36 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.