正态分布及常用分布的matlab编程实现

functionbimodal%正态分布x=1:50;y=normpdf(x,25,5);plot(x,y)functionbimodal%双峰分布x=1:50;y=normpdf(x,16,3);plot(x,y)z=normpdf(x,30,3);w=y+z;w=w./sum(w);plot(w)functionbimodal%三峰分布x=1:50;y=normpdf(x,10,3);z=normpdf(x,25,3);q=normpdf(x,40,3);w=y+z+q;w=w./sum(w);plot(w)functionbimodal%四峰分布x=1:50;y=normpdf(x,7,2.6);z=normpdf(x,19,2.6);q=normpdf(x,31,2.6)p=normpdf(x,43,2.6);w=y+z+q+p;w=w./sum(w);plot(w)functionbimodalx=1:50;w=exp(-0.4*x)+0.04;w=w./sum(w);plot(w)