| Exam Board | OCR |
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| Module | FP2 (Further Pure Mathematics 2) |
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| Year | 2013 |
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| Session | January |
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| Topic | Hyperbolic functions |
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3 By first expressing \(\cosh x\) and \(\sinh x\) in terms of exponentials, solve the equation
$$3 \cosh x - 4 \sinh x = 7$$
giving your answer in an exact logarithmic form.