[考古] 89 NTU 偏微分
8=ㄒㄧˋㄉㄚ
若X = r cos8 Y = r sin8
2 2
試問(r對x偏微) + (r對y偏微) = ?
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推
05/13 17:15, , 1F
05/13 17:15, 1F
→
05/13 17:16, , 2F
05/13 17:16, 2F
→
05/13 17:19, , 3F
05/13 17:19, 3F
→
05/13 17:21, , 4F
05/13 17:21, 4F
→
05/13 17:47, , 5F
05/13 17:47, 5F
→
05/13 17:47, , 6F
05/13 17:47, 6F
推
05/13 18:54, , 7F
05/13 18:54, 7F
推
05/14 17:11, , 8F
05/14 17:11, 8F
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