1 2 -1 2 3 0 1 5 1 -2 0 3 -2 -4 1 6 求这个行列式的值
人气：475 ℃ 时间：2020-05-02 12:00:22
解答
r2-3r1,r3-r1,r4+2r1
1 2 -1 2
0 -6 4 -1
0 -4 1 1
0 0 -1 10
= 按第1列展开
-6 4 -1
-4 1 1
0 -1 10
c3+10c2
-6 4 39
-4 1 11
0 -1 0
= 按第2列展开
-6 39
-4 11
= -6*11+4*39
= 90
推荐
- 计算行列式的值1 2 -1 2 3 0 1 5 1 -2 0 3 -2 -4 1 6
- 求行列式D=(1 2 3 4)(2 5 0 3)(3 -1 0 5)(2 7 3 6)的值
- 计算行列式D=(7,6,3,0;3,5,7,-1;5,4,3,0;5,6,5,-1)的值
- 求四阶行列式值 a 0 0 0 1 b 0 0 2 4 c 0 3 5 6 d
- 1.计算行列式:2 1 4 1 3 -1 2 1 1 2 3 2 5 0 6 2
- 英语中省略号是…还是……?
- 2立方米的水结成冰,体积改变了多少
- She can be sent to Oxford University＿＿ she got great success in her study.
猜你喜欢
