老师,这道题也是用行列式的定义计算下列行列式.
问题描述:
老师,这道题也是用行列式的定义计算下列行列式.
a11 0 0 0
0 a22a230
0 a32a330
00 0 a44
答
D = (-1)^t(1234) a11a22a33a44 + (-1)^t(1324) a11a23a32a44
= a11a22a33a44 - a11a23a32a44