Simplifying gamma distributions



> I am trying to simplify: 
> 
> gamma(a+1)/gamma(a) and maxima keeps spitting out gamma(a+1)/gamma
> (a) but it should equal a. 
> 
> Does anyone know how to simplify this? 

On way 

   (%i6) gamma(a+1)/gamma(a);
   (%o6) gamma(a+1)/gamma(a)

  (%i7) minfactorial(makefact(%));
  (%o7) a

Maybe somebody knows a  more direct way.

Barton