[理工] [線代] 台大100-資工
趁著對題目有印象時趕快發問
let A_n = [ 1/2 1/3 1/4 ... 1/n ]
[ 1/3 1/4 1/5 ... 1/n+1 ]
[ ... ... ... ... ... ]
[ ... ... ... ... 1/2n ]
求det(A_{n+1}) / det(A_{n}) = ?
看起來很像遞迴問題又不是遞迴問題,有點不知道要怎麼解... qqqqqqqq
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順便提供一題答案qqqqqqq
v = [1,2,3,4,5]^T u = [5,4,3,2,1]^T
求I_{5} + [v u][u^T v^T]所有的Eigenvalue
我是用硬爆算,算出來是 1, -19 和 91
剛剛跑了一下Eigenvalue calculator看起來也是對的
但是有更好的作法嗎?
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02/19 20:55, , 1F
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02/19 20:57, , 2F
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02/19 20:59, , 3F
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02/19 20:59, , 4F
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02/19 20:59, , 5F
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02/19 21:09, , 6F
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02/19 21:11, , 7F
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02/19 21:14, , 8F
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02/19 21:14, , 9F
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02/19 21:15, , 10F
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02/19 21:15, , 11F
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02/19 21:44, , 12F
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02/19 21:53, , 13F
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02/19 21:55, , 14F
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02/19 21:55, , 15F
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02/19 21:56, , 16F
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02/19 22:00, , 18F
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02/19 22:01, , 19F
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09/11 14:17, , 26F
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