设线性方程组 ) (x)_(1)+2(x)_(3)=-1 -(x)_(1)+(x)_(2)-3(x)_(3)=2 2(x)_(1)-(x)_(2)+5(x)_(3)=0 .,求其系数矩阵和增广矩阵的秩,并判断其解的情况.

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

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

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(

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)_(

对于线性方程组 ) 2(x)_(1)+3(x)_(2)=-1 (x)_(1)-2(x)_(2)=3 .对于线性方程组，下列错误的选项是。系数行列式为该方程组

已知线性方程组 ) a(x)_(1)+(x)_(3)=1 (x)_(1)+a(x)_(2)+(x)_(3)=0 (x)_(1)+2(x)_(2)+a(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

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

[题目]设线性方程组 _(1)+(X)_(2)-(X)_(3)=-1-|||-(X)_(1)+K(X)_(2)-2(X)_(3)=0-|||-(X)_(1)+2

3.利用逆矩阵求解下列线性方程组:-|||-(2) ) (x)_(1)-(x)_(2)-(x)_(3)=2 2(x)_(1)-(x)_(2)-3(x)_(3