Suppose that * is a stationary point of the problem minimize f(x) subject to 1+2x2 x3 = 5, 5x12x2 where f: R R is such that Vf(x) = = -2x1 + 4x2 +8 -6 Fill in the blanks below. x = B, where A B= Vf(x*): = E, where F D= V f(x*) M= E GH I = J K L where MNO H= K N= 0- Is f(x) convex? (yes/no) yes