I used the hiperbolic function ( y=a cosh (x/a) ) but this one works just for x between -1 _ +1, and only works for catenaries that are "hangued" from to points at the same hight. I can send you my definition... I just don't know how should I send it to you.
I've been working on a catenary description, and I have a question for you. My catenray for the moment works only when the two points are at the same high, how did you manage to resolve it. Any help wolud be very apprecated. Thanks