matlab课程大作业，共两个小程序，一个是根据shouming.txt 中的数据分析人均寿命分布情况；另一个是任意输入两个相向而行的波的幅度、频率、相位，观察这两个波叠加的动画，比如可以形成驻波、拍等典型的波-matlab course great job, a total of two small programs, one is based on shouming.txt life expectancy in the distribution of data analysis the o