On Tue, Mar 21, 2017 at 4:28 PM Aaron Tresham <[email protected]> wrote:
> If I run x^2/x in SMC, the output is x. > That is what is really going on here. Maxima isn't relevant at all. By the time maxima sees your input, x^2/x has already beeb simplified to c. > That is fine in some contexts (although the user should mentally add "x > not equal to 0"). > > I'm dealing with rational functions with holes, and Sage is eliminating > the hole. Of course, it would be very nice if my students would notice the > hole themselves. > > Aaron > > > On Tuesday, March 21, 2017 at 12:52:07 PM UTC-10, William Stein wrote: > > What happens if you just type x^2/x ? > > On Tue, Mar 21, 2017 at 3:35 PM Aaron Tresham <[email protected]> wrote: > > Does anyone know if there is a similar group to discuss issues with > Maxima? (I think that's where my problem lies). > > When I do something like: > > solve(x^2/x==0,x) > > I expect no solutions, but Sage gives me one solution, x==0. I'm assuming > Sage uses Maxima here, and Maxima simplifies the fraction before solving > (and fails to check afterwards). I can catch things like this myself, but > I'm not sure my students would notice (especially if a hole is hidden > inside a complicated rational function). > > Thanks, > Aaron > > -- > You received this message because you are subscribed to the Google Groups > "sage-cloud" group. > > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > > > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-cloud/57f370bf-76ba-4bf5-8a20-8e1c0ba1201e%40googlegroups.com > <https://groups.google.com/d/msgid/sage-cloud/57f370bf-76ba-4bf5-8a20-8e1c0ba1201e%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > -- > > Best Regards, > William Stein > > CEO, SageMath, Inc. > > -- > You received this message because you are subscribed to the Google Groups > "sage-cloud" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-cloud/948c7fc8-9ea2-4e3c-aa54-aecfafaf7b35%40googlegroups.com > <https://groups.google.com/d/msgid/sage-cloud/948c7fc8-9ea2-4e3c-aa54-aecfafaf7b35%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- Best Regards, William Stein CEO, SageMath, Inc. -- You received this message because you are subscribed to the Google Groups "sage-cloud" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-cloud/CA%2BjwZMivd1VXZnaCcTO2Y9iFncO%3DGOORhgzOx0E6xJ_PMNC7pw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
