logistic映射李雅普诺夫matlab代码

以下是logistic映射的李雅普诺夫指数的Matlab代码:

Le=zeros(401,);
i=0;
for u=0:0.001:4
    i=i+1;
    x=0.9;
    y=0;
    for k=1:200
        x=u*x*(1-x);
        y=y+log(abs(1-2*x));
    end
    Le(i,1)=u;
    Le(i,2)=y/200;
end
plot(Le(:,1),Le(:,2));
hold on;
n=0:0.001:4;
plot(n,0,'b');
xlabel('\mu');
ylabel('Lyapunov指数图');
axis([1.5 4 -5 1]);
grid on

这段代码会计算logistic映射的李雅普诺夫指数，并绘制李雅普诺夫指数图。其中，u表示参数值，x表示初始值，y表示李雅普诺夫指数的累加和。该代码会在指定的参数范围内计算李雅普诺夫指数，并将结果绘制成图表。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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