2 1 -3 2
3 2 1 -2
1 1 4 -4
=====
1 1 4 -4
0 -1 -11 10
0 -1 -11 10
=====
1 1 4 -4
0 1 11 -10
0 0 0 0
==========
1 0 -7 6
0 1 11 -10
0 0 0 0
x1=7x3-6x4
x2=-11x3+10x4
åx3=1,x4=0,å¾
x1=7,x2=-11
ξ1=(7,-11,1,0)T
åx3=0,x4=1,å¾
x1=-6,x2=10
ξ2=(-6,10,0,1)T
æ以
ξ1=(7,-11,1,0)T,ξ2=(-6,10,0,1)T为ä¸ä¸ªåºç¡è§£ç³»
é解为x=c1ξ1+c2ξ2.
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x1+2x2-3x3=0
2x1+x2+2x3=0
x1-x2+3x3=0
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追ç1 2 -3
2 1 2
1 -1 3
=====
1 2 -3
0 -3 8
0 -3 6
=====
1 2 -3
0 -3 8
0 0 -2
秩为3,çäºæªç¥æ°ç个æ°,æ以
åªæé¶è§£.