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请问这个n阶行列式怎么计算,用什么方法计算的,谢谢.
l a 0 0 ... 0 1 l
l 0 a 0 ... 0 0 l
l 0 0 a ... 0 0 l
l::: ::l
l 0 0 0 ... a 0 l
l 1 0 0 ... 0 a l
人气:174 ℃ 时间:2020-08-04 13:13:01
解答
l a 0 0 ... 0 1 l
l 0 a 0 ... 0 0 l
l 0 0 a ... 0 0 l
l::: ::l
l 0 0 0 ... a 0 l
l 1 0 0 ... 0 a l
=
l 1+a 0 0 ... 0 1 l
l 0 a 0 ... 0 0 l
l 0 0 a ... 0 0 l
l::: ::l
l 0 0 0 ... a 0 l
l 1+a 0 0 ... 0 a l
=
l 1+a 0 0 ... 0 1 l
l 0 a 0 ... 0 0 l
l 0 0 a ... 0 0 l
l::: ::l
l 0 0 0 ... a 0 l
l 0 0 0 ... 0 1-a l
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