alexelias4113 alexelias4113 23-05-2023 Mathematics contestada 2. (a) Find the derivative y', given: (i) y =(2²+1) arctan r - *; Answer: (ii) y = sinh(2r logr). Answer: (b) Using logarithmic differentiation, find y' if y=x³ 6² coshª 2x. Answer: (3 marks) (3 m