4. Let f(x,y) = x2+ 4xy + y2. We call the region ｛(x,y)| x2 + y2 ＜1｝open disk D1, [(x,y)| x2+ y2 ≤1｝ the closed disk D2, and｛(x,y)| x2 + y2 =1｝the circle C.
申論題內容
(2)On the circle C compute the absolute maximum value and absolute min- imum value of f(x, y).
阿摩線上測驗
登入