6) 3) Find all the critical points of the function 1 4 1 2 y g( ) 4 2 + b) For each critical point, use the second and (Where necessary) higher derivative tests to determine whether it is a local maximum, a local minimum, or an inection point. c) For each local maximum (local minimum) you found in part b), determine Whether the second derivative test implies that it is also a global maximum (respectively global minimum)