| Exam Board | CAIE |
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| Module | P3 (Pure Mathematics 3) |
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| Year | 2011 |
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| Session | November |
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| Topic | Product & Quotient Rules |
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2 The equation of a curve is \(y = \frac { \mathrm { e } ^ { 2 x } } { 1 + \mathrm { e } ^ { 2 x } }\). Show that the gradient of the curve at the point for which \(x = \ln 3\) is \(\frac { 9 } { 50 }\).