Let f(x) = 7+2Determine the derivative of f at x = 9.(-) '(9) = Let f(c) = + 2 Determine the derivative of at:r =

Let f(x) = 7+2Determine the derivative of f¹ at x = 9.(ƒ-¹) '(9) =

Let f(c) = + 2 Determine the derivative of at:r = 9.