% -*- texinfo -*- % @deftypefn {Function File} {} pvl (@var{r}, @var{n}, @var{p}) % Return the present value of an investment that will pay off @var{p} % in one lump sum at the end of @var{n} periods, given the interest % rate @var{r}. % % Note that the rate @var{r} is specified as a fraction (i.e., 0.05, % not 5 percent). % @end deftypefn