通过matlab代码画出的各种概率密度函数图形仅供参考-By matlab code to draw the beta probability density function graph for reference only

these are some matlab programs having pdf of normal distribution boinomial distribution poisson distribution. these are taken from well known book anthones paopulus on probability theory

泊松融合的程序，既有pdf的讲解，也有每幅图像的实现程序(A program for the fusion of Poisson, with both the PDF explanation and the implementation of each image)