是这样的:
N=8.67*10^10,M=0.3*10^10,r=0.0414%,T=2,Os=0.5499,q=0.5,S=17.32,K=19.68;
d1=((ln(V/(N*K))+r*T+0.5*T*o^2)/(o*sqrt(T));
d2=d1-o*sqrt(T);
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V=S*N+V*((q*M)/(N+M*q))*NormalCDF(d1)-N*((q*M)/(N+M*q))*exp(-r*T)*K*NormalCDF(d2);
o=S*Os*N/(V-(V*q*M/(N+M*q))*Normal(d1));
求V,o---