| Exam Board | Edexcel |
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| Module | FP3 (Further Pure Mathematics 3) |
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| Year | 2015 |
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| Session | June |
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| Topic | Hyperbolic functions |
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2. A curve has equation
$$y = \cosh x , \quad 1 \leqslant x \leqslant \ln 5$$
Find the exact length of this curve. Give your answer in terms of e .