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[ÇóÖú] ÇóÖúmatlab±à³ÌÎÊÌâ~

ÇóÖúÒ»¸ömatlabÒþº¯ÊýÇó½âÎÊÌ⣬¶¨ÒåaµÄÈý¸öÖµ£¬¸ù¾Ý±í´ïʽµÃµ½V0µÄÖµ£¬Ôٵõ½VµÄÖµ£¬Ïë»­³öÒþº¯ÊýV*sqrt(1-b)=(m+1)*pi-atan(sqrt(1-b)/b)-atan(sqrt(1-b)/(b+a))¹ØÓÚV-bµÄÇúÏßͼ¡£Çó¸÷λ¸ßÊÖÖ¸µãÃÔ½ò£¬Íò·Ö¸Ðл£¡£¡£¡
×Ô±à³ÌÐòΪ
clear all
close all
clc
b=zeros();
V0=zeros();
V=zeros();
a=[0,1,10];
for m=0:2
        V0(m+1)=atan(sqrt(a(m+1)));
        V(m+1)=V0(m+1)+m*pi;
        S=solve('(m+1)*pi-atan(sqrt(1-b)/b)-atan(sqrt(1-b)/(b+a))-V*sqrt(1-b)','b')
       % ±í´ïʽΪ V*sqrt(1-b)=(m+1)*pi-atan(sqrt(1-b)/b)-atan(sqrt(1-b)/(b+a));
end
plot(V,b)
hold on   
                 
xlabel('Normalized frequency V')
ylabel('Normalized guide index b')
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