| Exam Board | CAIE |
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| Module | P3 (Pure Mathematics 3) |
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| Year | 2018 |
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| Session | November |
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| Topic | Exponential Functions |
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2 Showing all necessary working, solve the equation \(\frac { 2 \mathrm { e } ^ { x } + \mathrm { e } ^ { - x } } { \mathrm { e } ^ { x } - \mathrm { e } ^ { - x } } = 4\), giving your answer correct to 2 decimal places.