HP Prime undef for Limes. Maybe a Bug?

[roadrunner]

You can always make a CAS program to do that, such as:

Code:

#cas
limit_exact(a,b,c,d):=
BEGIN
 c:=exact(c);
 retrun subst(limit(a,b,c,d),b=c);
END;
#end

limit_exact(((5-2*x)/(2*x^2-3*x-5)),x,2.5,0)

will return -2/7.

-road