对于线性方程组 ) 2(x)_(1)+3(x)_(2)=-1 (x)_(1)-2(x)_(2)=3 .

线性方程组-|||-线性方程组-|||- ) 2(x)_(1)-3(x)_(2)=2, (x)_(1)+4(x)_(2)=-1 .-|||-的矩阵表示式为

给定线性方程组 ) (x)_(1)+(x)_(2)+(x)_(3)=a-3 (x)_(1)+a(x)_(2)+(x)_(3)=-2 (x)_(1)+(x)_(

5.线性方程组 ) (x)_(1)-(x)_(2)=(a)_(1) 2(x)_(2)-(x)_(3)=(a)_(2) (x)_(1)+(x)_(2)-(x)

解线性方程组_(1)-2(x)_(2)+(x)_(3)=-2-|||-__ __-|||-(x)_(1)+(x)_(2)-3(x)_(3)=1-|||--(x)

非齐次线性方程组 ) -2(x)_(1)+(x)_(2)+(x)_(3)=-2 (x)_(1)-2(x)_(2)+(x)_(3)=lambda (x)_(1

线性方程组 ) (x)_(1)+2(x)_(2)-2(x)_(3)=1 2(x)_(1)+4(x)_(2)-4(x)_(3)=2 3(x)_(1)+6(x)_

16.线性方程组 ) (x)_(1)+(x)_(3)=0 2(x)_(2)+(x)_(3)=0 2(x)_(1)+3(x)_(2)=0 .16.线性方程组用

非齐次线性方程组 -2(x)_(1)+(x)_(2)+(x)_(3)=-2-|||-_(1)-2(x)_(2)+(x)_(3)=lambda -|||-_(1

解下列线性方程组 ) (x)_(1)+2(x)_(2)+3(x)_(3)=1 2(x)_(1)+2(x)_(2)+5(x)_(3)=2 3(x)_(1)+5(

非齐次线性方程组-2(x)_(1)+(x)_(2)+(x)_(3)=-2-|||-__ __-|||-_(1)-2(x)_(2)+(x)_(3)=lambda