Edexcel F3 2015 June — Question 1

Exam BoardEdexcel
ModuleF3 (Further Pure Mathematics 3)
Year2015
SessionJune
TopicHyperbolic functions
  1. Find the exact values of \(x\) for which
$$\cosh 2 x - 7 \sinh x = 5$$ giving your answers as natural logarithms.
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