9.3 The Chain Rule
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A curve has the equation 3x2+xy−2x+2y2=113x^2 + xy - 2x + 2y^2 = 113x2+xy−2x+2y2=11:

a.

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

[5]
b.

Find an equation for the tangent to the curve at the point P(1,2)P(1, 2)P(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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