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 other is the two meet each other halfway arbitrary input wave amplitude, frequency, phase, observation of these two waves superposition of the animation, such as to form a standing wave, making the typical wave