- Constant a(3)=[4.489850237*(10^9),0.99633839*(10^9),0.474561615];
- Function
- a1-x1*normalcdf((ln(x1/a2)+0.025+x2*x2/2)/x2)+a2*(exp(-0.025))*normalcdf((log(x1/a2)+0.025-x2*x2/2)/x2);
- x1*x2*NormalCDF((ln(x1/a2)+0.025+x2*x2/2)/x2)-a1*a3;
x2: 0.392993005758879


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