5) (16 pts) The function f (x) = 2x* * and its tangent line at x = e is shown. The y-intercept of the tangent line is (0, -2e). a. What is the instantaneous rate of change of f (x) at x = e? b. The relative minimum of this function / (x) occurs at x = 1. Find the equation of the tangent line at x = 1