投入产出综合平衡分析

问题拍了图片，没上传，等有空

>> a=[0.15 0.1 0.2;
0.3 0.05 0.3; 0.2 0.3 0]a =0.1500 0.1000 0.20000.3000 0.0500 0.30000.2000 0.3000 0>> d=[50 150 100]&＃39;;
>> b=eye(3)-a;
>> x=b\d;
>> dx=inv(b)dx =1.3459 0.2504 0.34430.5634 1.2676 0.49300.4382 0.4304 1.2167