The function / ( x, y ) = 4 _ 2 has one critical point. Determine its location and type. O (0, 0 ), minimum point O (V2, 1 ), saddle point O (V 2, 1 ), maximum point O (0, 0 ), saddle point O (2, 1), minimum point O (2, 1 ), minimum point O (2, 1 ), saddle point O (0, 0 ), maximum point