9. [/5 Points] Use the formulas in this theorem together with the chain rule to compute the derivative of the following function. x) = cos1(sin(xz + 4x)) f'(X) = Use the formulas in this theorem together with the chain rule to compute the derivative of the following function. f(X) = arctan(4 + x5) f'(X) = 11. [-I5 Points] Use the method of logarithmic differentiation to compute %. x 4x2 + x3 y = V x4 + 2