[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 lcP@5ZW  
q%'ovX(dm  
Y值为负的那几个点是异常值 }?~uAU-  
EUn"x'   
clc `MwQ6%lf  
clear ZB2'm3'bh  
close all NY;UI(<]  
nx = 0:0.6:150; &59#$LyH`%  
n = length(nx)-1; /j)VES  
figure ^kD?0Fm  
xz = []; 1h#k&r#*3  
yz = []; _l,Z38  
for ii = 1:n pk
U e|V  
    f=300; 8k1r|s@d  
    h=150-nx(ii); "^=[*i  
    b=atan(h/f); A{J1 n  
    d=(b/pi)*180 
0C p}  
    syms c Fa!)$eb7  
   Y=solve(sin(c-b)-1.494*sin(3*c-pi)==0,c); mce`1Tjw  
   C=double(Y); 55cldo   
   e=(C/pi)*180; ,%'0e/  
    x=0:0.1:0.6; mc+wRx  
    y=(0.6-x)*tan(C);  ke#;1  
    xz = [xz x+nx(ii)] .fsk DW  
    yz = [yz y]; bZ9NnSuH  
    plot(xz,yz,'k-') (rG1_lUDu  
    hold on j'i42-Lt/p  
    pause(0.01) QO7:iSZJ  
end LJ/qF0L!H  
^'fKey`  
u#M)i30j  
sB
b.Y k  
mCt>s9a)H