(2 -1 -1 1; 1 1 -2 1; 3 6 -9 7 )化为最简形矩阵

问题描述:

(2 -1 -1 1; 1 1 -2 1; 3 6 -9 7 )化为最简形矩阵

r1-2r2,r3-3r20 -3 3 -11 1 -2 10 3 -3 4 r3+r10 -3 3 -11 1 -2 10 0 0 3 r3*(1/3),r1+r3,r2-r30 -3 3 01 1 -2 00 0 0 1r1*(-1/3),r2-r10 1 -1 01 0 -1 00 0 0 1r1r21 0 -1 00 1 -1 00 0 0 1