追赶法求三对角方程组 参数：a为下次对角元素向量, b是主对角元素向量,c为上次对角元素向量，f为右端向量-Chase method for three diagonal equations Parameter: A for the next diagonal element vector, B is the main diagonal element vector, C for the last diagonal element vector, f for the right side

五对角矩阵追赶法求解矩阵，有调用方法，并且经过我优化，一次性将矩阵处理成五对角数列，减少循环次数-Pentadiagonal matrix chase method for solving the matrix, there is a method call, and after I optimized one-time matrix processing into PENTADIAGONAL series, reducing the number of cycles