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1.9.16 Implicit differentiation (A-level only)

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Question 5

A curve has the equation x2+3xy+2x+y2=7x^2 + 3xy + 2x + y^2 = 7x2+3xy+2x+y2=7:

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(1,1)P(1, 1)P(1,1)

[3]

1.9.16 Implicit differentiation (A-level only) Questions

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