能不能给出2）的推导过程，其它的算法还可以再加上。

来源: wxcfan123 于 2013-12-15 16:30:49 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.