The function mfun(f, M1, M2, ... , Mn) evaluates (numerically) the function f with the arguments M1, M2, ... , Mn.  

For arguments M1, ..., Mn, the call mfun(f, M1, ..., Mn) will return   R = evalf(map[n](f, M1, ..., Mn)).

At most one of M1,...,Mn, may be non-scalar.