https://communities.sas.com/t5/Statistical-Procedures/solving-certain-mathematical-function/m-p/41466#M1775 I want to get the value of x assuming certain value of Y. how can I solve this problem using SAS?<BR /> the equation is <BR /> Y=(Γ(1/x) Γ(1/2x))/〖(Γ(1/3x))〗^2 <BR /> Best Regards,<BR /> Amani Mon, 28 Jun 2010 11:16:27 GMT deleted_user 2010-06-28T11:16:27Z https://communities.sas.com/t5/Statistical-Procedures/solving-certain-mathematical-function/m-p/41466#M1775 I want to get the value of x assuming certain value of Y. how can I solve this problem using SAS?<BR /> the equation is <BR /> Y=(Γ(1/x) Γ(1/2x))/〖(Γ(1/3x))〗^2 <BR /> Best Regards,<BR /> Amani Mon, 28 Jun 2010 11:16:27 GMT https://communities.sas.com/t5/Statistical-Procedures/solving-certain-mathematical-function/m-p/41466#M1775 deleted_user 2010-06-28T11:16:27Z https://communities.sas.com/t5/Statistical-Procedures/solving-certain-mathematical-function/m-p/41467#M1776 SAS is not really a numerical programming language, like MathCAD. You could get an approximation to the solution using a search algorithm like, for instance, Newton-Raphson, to compute local maxima across the range of x and then using successively smaller intervals to circle in to get an answer to a certain level of precision.<BR /> <BR /> I don't recognize the functional form to visualize the response surface. If there is not a unique solution, the search algorithms may not converge to the answer you were looking for. Mon, 28 Jun 2010 13:41:06 GMT https://communities.sas.com/t5/Statistical-Procedures/solving-certain-mathematical-function/m-p/41467#M1776 Doc_Duke 2010-06-28T13:41:06Z