→ a016258:x^2 / 2 ??? 114.42.194.10 11/24 01:43
→ jollic:同上,另外f(x)=x,for all x in R 是嗎?? 123.195.0.134 11/24 02:12
→ melancholy06:...啊靠= =昨天太睏了...題目打錯 123.240.86.54 11/24 19:11
※ 編輯: melancholy06 來自: 123.240.86.54 (11/24 19:12)
→ melancholy06:樓上兩位抱歉...已更正~_~ 123.240.86.54 11/24 19:12