Re: ln(e) <>1 on TI-92 II
[Prev][Next][Index][Thread]
Re: ln(e) <>1 on TI-92 II
I'm pretty sure the TI-92 does a couple of passes on an answer. In your
case, the answer is so complicated that even after the many passes it
performs, it wasn't enough to filter that out. one more was needed. It
might work differently, but one method of deriving stuff symbolically that
I have seen worked that way, and that would explain the ln(e). perhaps you
can somewhere adjust number of passes? if you increase it, things will take
longer, but then on the other hand stuff like ln(e) is gone for sure.
--
-R.Zwitserloot@BTInternet.com
Niklas Brunlid <e96nbr@EFD.LTH.SE> wrote in article
<199706081525.RAA19099@kobra.efd.lth.se>...
> This may be an old bug, but I haven't seen it before:
>
> d(e^(a*x+b*y),x) (d=derive)
>
> gives the answer
>
> a*ln(e)*e^(a*x+b*y)
>
> on my TI-92 II. It fails to see that ln(e) should be simplified to 1.
> A somple ln(e) gives you the answer 1, though...
>
> --
>
> - Niklas Brunlid (nma95nbr@student1.lu.se)
> PQF quote follows:
>
> "Let's just say that if complete and utter chaos was lightning, he'd be
the
> sort to stand on a hilltop in a thunderstorm wearing wet copper armour
and
> shouting 'All gods are bastards'."
> -- Rincewind discussing Twoflower
> (Terry Pratchett, The Colour of Magic)
>
References: