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# dy 1. Find and simplify. dx tanx (a) y= (3 marks) (b) y x cosh (In x) (3 marks) (c) + sinh 2y =

dy 1. Find and simplify. dx tanx (a) y= (3 marks) (b) y x cosh (In x) (3 marks) (c) + sinh 2y = y - cosh 2x (4 marks)

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