logistic序列

x=linspace(0,0,500);
x(1)=0.8;
t=linspace(0,0,11);
m=0;
n=0;
fori=1:499
x(i+1)=3.9*x(i)*(1-x(i));
ifx(i+1)>0.5
t(i+1)=1;
m=m+1;
else
t(i+1)=0;
n=n+1;
end
end
m
n

figure,plot(x);

输出结果：
287
212

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无法显示图片呢？