[求助]matlab编程绘图，三角函数，菲涅尔 [复制链接]

程序有问题，在140.4、139.8、132等点处有异常值，请教一下大家怎么改，应该是Y=…那一步的式子有问题，谢谢 0Z.X;1=  
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Y值为负的那几个点是异常值 3rxB]-  
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clc 8|cQW-L  
clear nB|m!fi<  
close all T^
Lg+g+I  
nx = 0:0.6:150; r_"=DLx6  
n = length(nx)-1; > w-fsL  
figure oCxh[U@*D  
xz = []; <MQTOz oj  
yz = []; IYG,n
t!  
for ii = 1:n h,*-V 'X.k  
    f=300; (kYwD  
    h=150-nx(ii); ["u:_2!4P  
    b=atan(h/f); /bSAVSKR  
    d=(b/pi)*180 GG=R!+p2  
    syms c (drDC1\  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); 9K:ICXm  
   C=double(Y); >)j`Q1Qc\  
   e=(C/pi)*180; srGF=1_  
    x=0:0.1:0.6; #5%\~f  
    y=(0.6-x)*tan(C); n40&4n  
    xz = [xz x+nx(ii)] n:8<Ijrh  
    yz = [yz y]; *SmR|Qy  
    plot(xz,yz,'k-') 3oQ?
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    hold on Y00hc8<  
    pause(0.01) i)1013b  
end Zk+c9,q  
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