Question

第一题用matlab该怎么做啊，就是如何求二项分布的泊松近似的近似值

Answer 1

n= 100;
p= 0.01;
lamda = n*p;
possion = zeros(1,21);
accurate = zeros(1,21)
for k = 0:20;
possion(k+1) = lamda^k/gamma(k+1)*exp(-lamda);
accurate(k+1) = gamma(n+1)/gamma(k+1)/gamma(n-k+1)*p^k*(1-p)^(n-k);
end
plot([0:20],possion,'co-',[0:20],accurate,'b*')

追问

有点看不懂呢，可以在后面用文字说明一下么？