Erro in calling function in fsolve that has conditional operators

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Shailee Yagnik
Shailee Yagnik 2019-9-4
评论： Shailee Yagnik 2019-9-4
Here is my full code:
s1=4;
s2=1.2;
r=0.3;
t1=2.52;
tu=37; %limit for qfunc
v1=sqrt(1-r^2);
v2=r/v1;
v3=exp(-s2^2/2);
c1=t1/v1;
c2=(s1-r*s2)/v1;
x2d=(c1+tu)/v2;
x2n=x2d-c2/v2;
F1=ferror(x2d,x2n)
Error=fsolve(@(x2) F1,0)
function F1=ferror(x2d,x2n,x2)
%case 1 x2<x2n
if x2 < x2n
F1= v3.*exp(x2.*s2).*qfunc(-c1+v2.*x2)/qfunc(-c1+c2+x2.*v2);
% case 2 x2n<x2<x2d
else if x2n <= x2 & x2 <= x2d
F1 = -(v3.*exp(x2.*s2-(-c1+v2.*x2)^2/2))/(qfunc((-c1+c2+x2.*v2))*sqrt(2*pi)*(-c1+v2.*x2));
%case 3 x2>x2d
%
else
F1 = v3.*((-c1+c2+x2.*v2)/(-c1+v2.*x2)).*exp(-(-c1+v2.*x2)^2/2+(-c1+c2+x2.*v2)^2/2+x2.*s2);
end
end
end
If I run this it says undefined variable x2
please help.

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采纳的回答

Matt J
Matt J 2019-9-4
编辑：Matt J 2019-9-4
Change these two lines,
%F1=ferror(x2d,x2n)
Error=fsolve(@(x2) ferror(x2d,x2n,x2),0)
Also, make sure to pass all variables that ferror() needs, like s2,c2, etc... or make ferror() a nested function.

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