A2 June 2022 Paper 1 Q3

3 Given that \(y = \operatorname{sech} x\), find \(\dfrac{\mathrm{d}y}{\mathrm{d}x}\)

Tick (✓) one box. [1 mark]

• \(\operatorname{sech} x \tanh x\)
• \(-\operatorname{sech} x \tanh x\)
• \(\operatorname{cosech} x \coth x\)
• \(-\operatorname{cosech} x \coth x\)