2.6 托伯利兹矩阵求逆的特兰持方法btrch.c 2.7 求行列式值的全选主元高斯消去法bsdet.c 2.8 求矩阵秩的全选主元高斯消去法brank.c-2.6 Toeplitz matrix inversion method of trun who seek btrch.c 2.7 Select the main determinant of the value of the yuan bsdet.c 2.8 Gaussian elimination matrix rank ord