中文说明：这个资源是定步长四阶经典公式的matlab程序,可以用于进行相关的数学计算，欢迎大家下载哈，请各位批评指正，谢谢大家
English Description：
This resource is the matlab program of the fourth-order classical formula of constant step size, which can be used for related mathematical calculation. Welcome to download, please criticize and correct, thank you