[LON-CAPA-users] Variable names in formula response

Guy Ashkenazi lon-capa-users@mail.lon-capa.org
Thu, 14 Dec 2006 11:45:59 -0700

> So ways forward I see
> 1) disallow variables that confuse us easily ( "X1" "sin" )
> or
> 2) allow most anything as a variable, but require predecleration of
>   the varialbes students would enter.

I would go with the second, since in many cases in chemistry and 
physics numbered variables make more sense (e.g. R1, R2 for resistance 
of resistors in a loop).
I can see why 2X should be translated into 2*X, but I don't think that 
anyone who writes X2 means X*2. Can you just change this part of the 
implicit multiplication algorithm?