OCR Further Pure Core 1 2021 November — Question 8

Exam BoardOCR
ModuleFurther Pure Core 1 (Further Pure Core 1)
Year2021
SessionNovember
TopicHyperbolic functions
8 You are given that \(\mathrm { f } ( x ) = 4 \sinh x + 3 \cosh x\).
  1. Show that the curve \(y = f ( x )\) has no turning points.
  2. Determine the exact solution of the equation \(\mathrm { f } ( x ) = 5\).
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