Question

用matlab画出该函数表达式的图 其中N=1:64,n=1,2,4时g(n)

Answer 1

将以下程序放在一个m文件里运行,即可得到你要的结果.标注什么的根据自己的需要更改.

function []=myhelp_plot()

nn = [1 2 4];

for ii = 1:length(nn)

n = nn(ii);

for N = 1:64

mysum = 0;

for i = 1:n

temp = (nchoosek(32,i)*(i^n+my_sum1(i,n)))/(32^n);

temp = temp*(i*(N-n)/32);

mysum = mysum+temp;

end

gn(N) = n+mysum;

end

GN(:,ii) = gn;

end

N = 1:64;

plot(N,GN(:,1),'r',N,GN(:,2),'g',N,GN(:,3),'b')

legend('n=1','n=2','n=4');

xlabel('N');ylabel('g(n)');

title('my help plot copyright cxd1301')

function output = my_sum1(i,n)

my_sum = 0;

for k = 1:(i-1)

temp = (-1)^k*nchoosek(i,k)*(i-k)^n;

my_sum = my_sum+temp;

end

output = my_sum;

如有问题欢迎追问,觉得可以请给采纳.

copyright cxd1301