T(1,1,1)=(1,3,0)=x1+2x2-3x3
T(0,1,1)=(0,2,0)=2x2-2x3
T(0,0,1)=(0,0,-1)=-x3
故所求矩阵为
1 0 0
2 2 0
-3 -2 -1