我试图用inv()函数求逆矩阵。Excel功能运行良好,但我无法从Stata 11和Stata 12版本获得它。
matrix A = (0,0,553959,18071,0,0,86985,0,0,0\0,0,13752,1986661,0,0,14178,0,0,0\245764,55172,0,0,0,0,210238,15835,0,174155\135950,1217897,0,0,211554,0,348453,197592,424893,704246\0,0,40442,171113,0,0,0,0,0,0\277015,720994,0,0,0,0,0,0,0,0\0,0,0,