5. Find the derivative of each of the following functions. Simplify where possible. (3 marks each) a) f (x) = 4 x+4 b ) 8 (x ) = (4x 2 - 1 )5 c) h(x) = 3x (52x) d) s(x) = esin(x) 6. Determine the equation of the tangent to f (x) =- x2 - 5 - where x = 3