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作者 banmi 在 PTT [ Math ] 看板的留言(推文), 共27則
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8F→: 這兩個平面共同的交線一定會通過(0,0,0),12/25 18:30
9F→: 而且交線的方向向量會跟兩個平面的法向量垂直12/25 18:30
10F→: 平面的法向量外積出來是交線的方向向量12/25 18:30
13F推: 為了感謝,每天來推一次好了....06/24 15:53
14F推: 再來感謝一次....06/25 18:28
5F→: 太強了....!!!!03/15 07:50
8F→: 看起來應該是今天學測的考生,其實尺規作圖就好了...01/26 07:03
3F→: 這個某高中的月考就曾經出過,沒做過真的很難想...01/24 09:30
2F推: 讚,沒有想到可以這樣解!!06/20 14:47
2F→: 太神了... 可以問怎麼想到這樣子切入嗎?07/16 10:51
3F→: 暴力法就好了,假設座標,一定可以做....05/08 19:04