2. (15 points) Consider the function f (.13) : 3x4 4.1:3 132.122 + 4802: + 120. a) (5 points) Find the critical values of f (hint: they are all rational). (b) (5 points) For each critical point, say whether it is a maximum, 3. minimum or an inexion point. (c) (5 points) Are these local or global maxima or minima