Am 25.11.2012 um 02:13 schrieb Kip Warner <k...@thevertigo.com>:
> Hey list,
>
> I am trying to typeset the Verhulst equation which contains a Euler
> constant which I cannot get to display correctly:
>
> \placeformula[formula:Verhulst equation]
> \startformula
> \math{P(t) = \frac{K P_0 \Eulerconst^{rt}}
> {K + P_0(\Eulerconst^{r t} - 1)}}
> \stopformula
>
> The location for the \Eulerconst just shows up blank with nothing there,
> so I am assuming this is the wrong command. I am using ConTeXt
> 2012.11.16 under Ubuntu Precise.
You need a font which has the symbol, e.g. Cambria or Lucida OT.
> In addition, the following formula does not typeset correctly. There is
> no arrow linking 't' to infinity symbol:
>
> \placeformula[formula:Limit of Verhulst equation]
> \startformula
> \math{\lim_{t\to\infty} P(t) = K.\,}
> \stopformula
Works for me (Version 2012.11.23).
BTW: Why do you use \math inside of \startformula because it’s the command for
inline math in normal text?
Wolfgang
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