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1.7.18 Chain rule (A-level only)

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Question 23

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]

1.7.18 Chain rule (A-level only) Questions

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