Find the absolute maximum and minimum of f(r, y) = 612 - 3y over the region 12 +y?

Find the absolute maximum and minimum of f(r, y) = 6c2 3y2 over the region c2 + 2. You can use this fact without calculating it: the only critical point is at (0, 0). Find the absolute maximum and minimum of f(r, y) = 6c2 3y2 over the region c2 + 2. You can use this fact without calculating it: the only critical point is at (0, 0).