计算行列式,详细步骤
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第二、三、四行都减去第一行后第二、三、四行分别提取a2-a1,a3-a1,a4-a1,得(a2-a1)(a3-a1)(a4-a1)*
1+a1b1 1+a1b2 1+a1b3 1+a1b4
.....b1..............b2..........b3..............b4
.....b1..............b2...........b3.............b4
....b1...............b2...........b3.............b4
=0.
可以吗?
1+a1b1 1+a1b2 1+a1b3 1+a1b4
.....b1..............b2..........b3..............b4
.....b1..............b2...........b3.............b4
....b1...............b2...........b3.............b4
=0.
可以吗?
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