The commercial maxima has demoivreh, which works on
hyperbolic functions. Perhaps this function should be
put into the code, with that name and documentation.
Stavros Macrakis wrote:
> > (C49) exponentialize(tanh(x));
> > x - x
> > %E - %E
> > (D49) -----------
> > x - x
> > %E + %E
> > Is there a command for the inverse operation?
>
> Here's a useful trick:
>
> subst(x/%i,x,demoivre(subst(x*%i,x,expr)))
>
> This gives you sinh(x)/cosh(x). I'm not sure if there is any standard
> way to get sin(h)/cos(h) to simplify to tan(h).
>
> -s
>
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