MATLAB循环结构问题

(1)

N_len = 100;
S = 0;
for n = 1:1:N_len
  S = S + (-1)^(n-1)/n;
end

(2)

N_len = 100;
S = 1;
for n = 1:1:N_len
  S = S * ((2*n * 2*n)/((2*n-1) * (2*n+1)));
end

n取不同长度你自己修改一下N_len就行了 写代码不易，望采纳！

私信我可以帮助你