结束上页 下页结束例 5? 计算 n 阶行列式
xaaaa
axaaa
aaxaa
aaaxa
aaaax
解? 解?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
31
21
1
cc
cc
cc n
)1(
)1(
)1(
)1(
)1(
xaaaanx
axaaanx
aaxaanx
aaaxanx
aaaaanx
13
12
1
rr
rr
rrn
0000
000
00
0
)1(
ax
aax
aaax
aaaax
aaaaanx
解?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
31
21
1
cc
cc
cc n
)1(
)1(
)1(
)1(
)1(
xaaaanx
axaaanx
aaxaanx
aaaxanx
aaaaanx
解?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
31
21
1
cc
cc
cc n
1(
1(
1(
1(
1(
xaaaanx
axaaanx
aaxaanx
aaaxanx
aaaaanx
13
12
1
rr
rr
rr n
0000
000
00
0
)1(
ax
aax
aaax
aaaax
aaaaanx
[x?(n?1)a](x?a)n?1?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
解? 解?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
31
21
1
cc
cc
cc n
)1(
)1(
)1(
)1(
)1(
xaaaanx
axaaanx
aaxaanx
aaaxanx
aaaaanx
13
12
1
rr
rr
rrn
0000
000
00
0
)1(
ax
aax
aaax
aaaax
aaaaanx
解?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
31
21
1
cc
cc
cc n
)1(
)1(
)1(
)1(
)1(
xaaaanx
axaaanx
aaxaanx
aaaxanx
aaaaanx
解?
xaaaa
axaaa
aaxaa
aaaxa
aaaax
31
21
1
cc
cc
cc n
1(
1(
1(
1(
1(
xaaaanx
axaaanx
aaxaanx
aaaxanx
aaaaanx
13
12
1
rr
rr
rr n
0000
000
00
0
)1(
ax
aax
aaax
aaaax
aaaaanx
[x?(n?1)a](x?a)n?1?
