采用列文逊递推算法求解对称托伯利兹型方程组。其中t存放T型矩阵的元素。b是右端常数向量。x是解向量。n是阶数。-Using Levinson recursion algorithm for symmetric Tuobolizi equations. Where t T-matrix elements of deposit. b is the right end of the constant vector. x is the solution vector. n is the order.