A2 June 2019 Paper 1 Q1

1 Which one of these functions has the set \(\{x : |x| \lt 1\}\) as its greatest possible domain?

Circle your answer. [1 mark]

• \(\cosh x\)
• \(\cosh^{-1} x\)
• \(\tanh x\)
• \(\tanh^{-1} x\)