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1.7.18 Chain rule (A-level only)

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Question 8

A curve has the equation x2+2xy−y2=1x^2 + 2xy - y^2 = 1x2+2xy−y2=1:

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]

1.7.18 Chain rule (A-level only) Questions

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