[toxinlord]

函数如下:
function h=hvalue2(f1,l1,l2,l3)
le=sqrt(l1.*l1+1-2*l1.*cos(f1));
r=acos((le.*le+l3.*l3-l2.*l2)/2./(le+eps)./l3);
b=asin(l1*sin(f1)/(le+eps));
f3=pi-r-b;
h=abs((l3*sin(f3)+l1.*l3*sin(f1-f3))./(l1*sin(f1)+l1.*l3*sin(f1-f3)+1*eps))

用plot(f,hvalue2(f,0.3,0.8,1))作图发现当f=1.1时,函数值有40+,
但输入命令hvalue2(1.1,0.3,0.8,1)后函数值只有18.9748,
其它的点也对不上,请问这是为什么呢?