F(2,5)=69 or F(-2,-5)=69, I think the Q is right.

来源: 万斤油于 2012-03-11 20:03:06 [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.