看板 b94902HW 關於我們 聯絡資訊
12.10的第二題要怎麼解釋啊? 是說f在1的一階導數為正,在2的二階導數為負,所以不合嗎!? -- We know. The time of joy will pass again someday. Then, fresh wind blows. It treasures that is happy. too, to be sad, too. Let's repeat it eternally, and live, and go!! maybe happy... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 220.229.24.248
Lycca:yes! 01/10 00:51