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clear;clc;
w=5;
f=200;
n1=1;
n2=1.475;
r=0.025;
syms q;
f1=((n2^2*cos(q)-n1*sqrt(n2^2-n1^2*sin(q)^2))/(n2^2*cos(q)+n1*sqrt(n2^2-n1^2*sin(q)^2)))^2*sqrt(w^2-f^2*tan(q)^2)*f/cos(q);
n3=1-4/(pi*w^2)*vpa(int(f1,q,0,atan(w/f)));
z1=0:0.05:r*f/w;
plot(z1,double(n3));
hold on;
syms q1;
z2=r*f/w:10:800;
f2=((n2^2.*cos(q1)-n1.*sqrt(n2^2-n1^2.*sin(q1).^2))./(n2^2.*cos(q1)+n1*sqrt(n2^2-n1^2.*sin(q1).^2))).^2.*sqrt(f^2.*r^2./z2.^2-f^2.*tan(q1).^2).*f./cos(q1);
n4=w.^2.*r.^2./(z2.^2.*f.^2)-4./(pi.*w.^2).*vpa(int(f2,q1,0,atan(r./z2)));
plot(z2,double(n4));
hold on;
错误提示如下:Warning: Explicit integral could not be found.
> In sym.int at 58
In mengkai at 9
??? Error using ==> sym.maple
at offset 14310, unexpected number
Error in ==> sym.int at 51
r = reshape(maple('map','int',f(:),[x.s '=(' a.s ')..(' b.s ')']),size(f));
Error in ==> mengkai at 16
n4=w.^2.*r.^2./(z2.^2.*f.^2)-4./(pi.*w.^2).*vpa(int(f2,q1,0,atan(r./z2))); |
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