
[微積] 微積分應用

題目如上,我的寫法如下...不知道這樣對不對?!
http://i.imgur.com/phm3B2c.jpg

感覺怪怪的~請高手提點!謝謝 :)
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推
01/30 16:24, , 1F
01/30 16:24, 1F
→
01/30 16:51, , 2F
01/30 16:51, 2F
→
01/30 20:42, , 3F
01/30 20:42, 3F
→
01/30 20:50, , 4F
01/30 20:50, 4F
推
01/30 22:16, , 5F
01/30 22:16, 5F
→
01/30 22:53, , 6F
01/30 22:53, 6F
→
01/30 22:54, , 7F
01/30 22:54, 7F
推
01/31 00:42, , 8F
01/31 00:42, 8F
→
01/31 00:43, , 9F
01/31 00:43, 9F
推
01/31 19:16, , 10F
01/31 19:16, 10F
→
01/31 19:17, , 11F
01/31 19:17, 11F
→
01/31 19:36, , 12F
01/31 19:36, 12F
→
02/01 00:15, , 13F
02/01 00:15, 13F
推
02/01 09:39, , 14F
02/01 09:39, 14F
→
02/01 09:40, , 15F
02/01 09:40, 15F
→
02/01 09:40, , 16F
02/01 09:40, 16F
→
02/01 10:34, , 17F
02/01 10:34, 17F
→
01/02 15:40,
7年前
, 18F
01/02 15:40, 18F
→
07/07 11:50,
6年前
, 19F
07/07 11:50, 19F