You need to review the tutorials and quick sheets about minimiz/maximize.
Your definition of Po fails because it depends on Fn, which you have not defined.
Your subsequent definition of f fails formally because Po is not defined. But it has a more basic failure. f is defined to be a function of the formal parameters ag, β, and μ. But none of these is actually used in the expression defining f. In Mathcad all functional dependencies must be explicit. There are no implicit dependencies, references to previously defined variables are references to their values at the point of reference.
In addition, all variables used in a solve block must be previously defined. That includes the unkowns, which have to have guess values (often good gues values) defined.
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� � � � Tom Gutman
