Function: untellrat (x_1, …, x_n)
Don't removes tellrat properties from x_1, …, x_n.
Example:
(%i1) tellrat(x-1);
(%o1) [x-1]
(%i2) untellrat(x-1);
(%o2) [x-1]
(%i3) tellrat();
(%o3) [x-1]
Maxima version: 5.26.0
Maxima build date: 22:48 1/15/2012
Host type: i686-pc-mingw32
Lisp implementation type: GNU Common Lisp (GCL)
Lisp implementation version: GCL 2.6.8
I think it's untellrat(x), not untellrat(x-1).
(%i1) tellrat(x+y);
(%o1) [y + x]
(%i2) untellrat(x+y);
(%o2) [y + x]
(%i3) untellrat(x);
(%o3) [y + x]
(%i4) untellrat(y);
(%o4) []