中文说明：程序包包含若个子程序，其中有最速下降法，共轭梯度法，牛顿法，拟牛顿法等搜索算法，运行过程中，比较各个算法的优缺点，便于对具体情况做出合适的选择
English Description：
The package contains several subroutines, including the steepest descent method, conjugate gradient method, Newton method, quasi Newton method and other search algorithms. In the process of running, the advantages and disadvantages of each algorithm are compared, so as to make a suitable choice for the specific situation