| Exam Board | CAIE |
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| Module | P3 (Pure Mathematics 3) |
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| Year | 2015 |
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| Session | November |
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| Topic | Product & Quotient Rules |
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3 A curve has equation
$$y = \frac { 2 - \tan x } { 1 + \tan x }$$
Find the equation of the tangent to the curve at the point for which \(x = \frac { 1 } { 4 } \pi\), giving the answer in the form \(y = m x + c\) where \(c\) is correct to 3 significant figures.