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dax071124

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a(1)=0.4;a(2)=0.5;
S(1)=100;S(2)=70;
q(1)=0.05;q(2)=0.03;
v(1)=0.1;v(2)=0.2;
r=0.25;rol=-0.5;T=1;n=2;
g=zeros(n,1);b=g;c=g;d=g;
for i=1:n
    b=0;c=0;d=0;
    b=b+a(i).*S(i).*exp(-q(i).*T);
    c=c+a(i).*S(i);
    for j=1:n
      if i==j
          rol(i,j)=1;
      else
          rol(i,j)=rol;
      end
    d=d+a(i).*a(j).*S(i).*S(j).*exp((-q(i)-q(j)+rol(i,j).*v(i).*v(j)).*T);
    end
    qcall=-1/T.*log(b./c)
    vcall=sqrt(1./T.*log(d./(b.^2)))         
end

qcall =

    0.0500


vcall =

    0.8079

??? Subscripted assignment dimension mismatch.

>> -log((40*exp(-0.05)+35*exp(-0.03))/75)

ans =

    0.0406
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