| Exam Board | CAIE |
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| Module | P3 (Pure Mathematics 3) |
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| Year | 2009 |
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| Session | November |
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| Topic | Differentiating Transcendental Functions |
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4 A curve has equation \(y = \mathrm { e } ^ { - 3 x } \tan x\). Find the \(x\)-coordinates of the stationary points on the curve in the interval \(- \frac { 1 } { 2 } \pi < x < \frac { 1 } { 2 } \pi\). Give your answers correct to 3 decimal places.