线性方程组 x1+x3+x4-x5=1,x2-x3-x4=-1,2x2-x5=0,x1-x3+x4=0帮我解出来_数学解答

线性方程组 x1+x3+x4-x5=1,x2-x3-x4=-1,2x2-x5=0,x1-x3+x4=0帮我解出来

人气：431 ℃　时间：2019-10-26 05:12:56

解答

增广矩阵 =1 0 1 1 -1 10 1 -1 -1 0 -10 2 0 0 -1 01 0 -1 1 0 0r4-r1,r3-2r21 0 1 1 -1 10 1 -1 -1 0 -10 0 2 2 -1 20 0 -2 0 1 -1r3*(-1/2),r1-r3,r2+r3,r4+2r31 0 0 0 -1/2 00 1 0 0 -1/2 00 0 1 1 -1/2 10 0 0 2...