Qljrs'l'ion 3 Find the almolute maximum and absolute minimum values of the function f (at, y) : 11:4 + '94 + 2:4 on the region {(u:,1 ,2) E R2 : 3:2 + y2 + 32 E l}. Hint: to nd the maximum and minimum on the boundary of this region, you might want to use Lagrange multipliers. QUES'I'ION 4 Find all complex solutions to the equation 11:3 : 64 (that is, nd all of the third roots of -64.) Express your answers in the form a. + bi