[求助]关于配焦椭流线法的matlab编程实现问题 [复制链接]

求前辈指点迷津，感觉椭流线表达式有问题，又不知道哪里不对 CWa~~h<r-  
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程序如下 4=qZ Z>[t  
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clearclc hI 1or4V  
h=1000;N=100; PWk\#dJN&  
R=100;for i=2:101 oe<DP7e  
    theata(i)=asin(sqrt((i-1)/N));end PnZC I!Mw  
theata(1)=0;for i=1:101 mnL+@mm  
%      r(i)=R*sqrt((i-1)/N);r(i)=sqrt(R^2/i) l!mx,O`  
end% r(1)=0; _"[Ls?tRX  
a=zeros(101,1);c=zeros(101,1); 2;ju/9x  
x=zeros(101,1);y=zeros(101,1); yS1i$[JV  
a(1)=550;x(1)=-50; W5,&*mo  
y(1)=0; r1[c+Hy  
C`qE ,2.  
for i=2:100    k=2*a(i-1); u~7fK  
    F=[h,r(i-1)/2-r(i)/2];    XY=((k^2-norm(F)^2)/(2*k-2*norm(F)*cos(pi-theata(i))))*[cos(pi-theata(i)),sin(theata(i))]; XNJ3.w:R  
    x(i)=XY(1);    y(i)=XY(2); 53WCF[  
    FX=F-XY;    a(i)=(norm(FX)+norm(XY))/2; X^Fc^U8  
    i    x(i) i ?PgYk&}  
    y(i)end s;cGf+  
plot(x，y）

请问楼主解决了吗