[線代] 計算題
小弟請求大神解說
http://i.imgur.com/FNCk8JU.jpg

有人可以指引方向嗎
轉來轉去看不出什麼端倪
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推
01/14 00:04, , 1F
01/14 00:04, 1F
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01/14 00:41, , 2F
01/14 00:41, 2F
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01/14 11:16, , 3F
01/14 11:16, 3F
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01/14 12:18, , 4F
01/14 12:18, 4F
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01/14 14:56, , 5F
01/14 14:56, 5F
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01/14 21:44, , 6F
01/14 21:44, 6F
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01/14 21:57, , 7F
01/14 21:57, 7F