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Subject: Re: [office-formula] Groups - OpenDocument Formula Specification2009-05-01 (ODT) (OpenDocument-formula-20090501.odt) uploaded

On Fri, 2009-05-01 at 10:22 +0000, erack@sun.com wrote:

> - If the numerator degrees of freedom (r1) is 1, then
>   the density function has a pole at x=0. The draft
>   spec does not define the return value in that case.
>   For x<0 it defines that the return value is 0. For
>   x>=0 it defines it with a term which has a subterm
>   x^(r1/2-1). And x^(-1/2) is not defined for x=0.
>   Mention that an error is to be returned in that case.
> - Change ugly looking hard to read formula to better
>   one using {x}over{y} instead of x/y and use left( ...
>   right) braces.

FDIST is a density function. It should be defined for all values.
Because of the pole in the expression, its return value should be
defined to be 0 there. (The original mistake was to include x=0 with the
positive rather than the negative x.)


Andreas J. Guelzow
Concordia University College of Alberta

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