93 求线性方程组_(1)+(x)_(2)-2(x)_(3)-(x)_(4)=4-|||-(x)_(1)-2(x)_(2)-(x)_(3)+2(x)_(4)=2-|||-(x)_(2)+7(x)_(3)+3(x)_(4)=-2-|||-(x)_(1)-3(x)_(2)-5(x)_(3)-(x)_(4)=4_(1)+(x)_(2)-2(x)_(3)-(x)_(4)=4-|||-(x)_(1)-2(x)_(2)-(x)_(3)+2(x)_(4)=2-|||-(x)_(2)+7(x)_(3)+3(x)_(4)=-2-|||-(x)_(1)-3(x)_(2)-5(x)_(3)-(x)_(4)=4 的特解.非齐次线性方程组的通解94解方程组_(1)+(x)_(2)-2(x)_(3)-(x)_(4)=4-|||-(x)_(1)-2(x)_(2)-(x)_(3)+2(x)_(4)=2-|||-(x)_(2)+7(x)_(3)+3(x)_(4)=-2-|||-(x)_(1)-3(x)_(2)-5(x)_(3)-(x)_(4)=4_(1)+(x)_(2)-2(x)_(3)-(x)_(4)=4-|||-(x)_(1)-2(x)_(2)-(x)_(3)+2(x)_(4)=2-|||-(x)_(2)+7(x)_(3)+3(x)_(4)=-2-|||-(x)_(1)-3(x)_(2)-5(x)_(3)-(x)_(4)=4