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5. Find the derivative of each of the following functions. Simplify where possible. (12 marks) a) f (x ) = - X (2X-3)2 b) g (x ) = (3x2 - 1)2(2x + 1)4 c) h(x) = 5x. 2x2+1 d) s(x) = COSX X Where x = 3 (5 marks) 6. Determine the equation of the tangent to f (x) = 2x-1 x - 2