![](https://cache.ptt.cc/c/https/i.imgur.com/6G1y7YOl.jpeg?e=1720182807&s=_JtqI6bw40YCYjufrjsOIA)
![](https://cache.ptt.cc/c/https/i.imgur.com/Hn4a8mYl.jpeg?e=1720187262&s=VPO3Y8guV8EIuMaGABNYBA)
![](https://cache.ptt.cc/c/https/i.imgur.com/yTEYFM3l.jpeg?e=1720178608&s=9jeosI2dVyBTbiTGJQpmAg)
![](https://cache.ptt.cc/c/https/i.imgur.com/nxd5JIll.jpeg?e=1720127033&s=3mZ97MyRDcO3CcfG6iQeGA)
![](https://cache.ptt.cc/c/https/i.imgur.com/Putut2Sl.jpeg?e=1720174676&s=wynthEiMiUcq6FORDs80Iw)
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推 kace111512: https://i.imgur.com/nxd5JIl.jpeg 07/02 02:32
推 kace111512: 你兩個式子相減就等於https://i.imgur.com/J0J8Pp0.jp 07/02 02:41
→ kace111512: eg 07/02 02:41
→ kace111512: https://i.imgur.com/Putut2S.jpeg 07/02 02:41
→ as88002: 感謝前輩指導,我在慢慢消化您的解答,請問我的計算部分 07/02 19:14
→ as88002: 有問題嗎? 07/02 19:14