Question

线性代数N阶行列式的计算

线性代数N阶行列式的计算求解这道题的解题全过程

Answer 1

A =
1 1 1 1
2 1 1 3
1 2 -2 5
4 -3 2 1
=
1 1 1 1
0 -1 -1 1
0 1 -3 4
0 -7 -2 -3
=
1 1 1 1
0 -1 -1 1
0 0 -4 5
0 0 5 -10
=
1 1 1 1
0 -1 -1 1
0 0 1 -5
0 0 5 -10
=
1 1 1 1
0 -1 -1 1
0 0 1 -5
0 0 0 15
= -15