求非齐次线性方程组2X1+7X2+3X3+X4=6 3X1+5X2+2X3+2X4=4 9X1+4X2+X3+7X4=2的通解

问题描述:

求非齐次线性方程组2X1+7X2+3X3+X4=6 3X1+5X2+2X3+2X4=4 9X1+4X2+X3+7X4=2的通解

增广矩阵 =2 7 3 1 63 5 2 2 49 4 1 7 2r3-3r2,r2-r12 7 3 1 61 -2 -1 1 -20 -11 -5 1 -10r1-2r20 11 5 -1 101 -2 -1 1 -20 -11 -5 1 -10r3+r1,r1*(1/11),r2+2r10 1 5/11 -1/11 10/111 0 -1/11 9/11 -2/110 0 0 0 0...