9.3 The Chain Rule
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A curve has the equation 2x2−3xy+y2=122x^2 - 3xy + y^2 = 122x2−3xy+y2=12:

a.

Find an expression for dydx\displaystyle \frac{dy}{dx}dxdy​

[5]
b.

Find an equation for the normal to the curve at the point (1,−2)(1, -2)(1,−2)

[3]

9.3 The Chain Rule Questions

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.

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9.3 The Chain Rule Questions

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