Re: TI-M: TI-89 root question

To: <ti-math@lists.ticalc.org>
Subject: Re: TI-M: TI-89 root question
From: "Paul Schippnick" <peschippnick@earthlink.net>
Date: Thu, 8 Jun 2000 23:38:04 -0700
References: <20000608220014.4235EA4030@towerguard.edu.sollentuna.se> <003001bfd1b3$69909f20$e402e0c7@Pnoveck>
Reply-To: ti-math@lists.ticalc.org


On algebraic calculators,  x^a^b^c...etc is evaluated left to right.

Does anyone know of an algebraic calulator that does this right to left?

My HP48GX evaluates this left to right just like my TI calculators.


----- Original Message -----
From: "Scott Noveck" <noveck@pluto.njcc.com>
To: <ti-math@lists.ticalc.org>
Sent: Thursday, June 08, 2000 6:38 PM
Subject: Re: TI-M: TI-89 root question


>
> > I didn't see any problem on the TI-86.  You have to put, say, 27^3 with
> the
> > superscripted -1 right after it, but if you don't want to use the
> > superscripted number for some reason, you have to do this:  27^(3^-1)
>
> That's a perfect example of the problem right there =)
>
> 27^3^-1 should be taken as 27^(3^-1) by default, as powers are _right_
> associative.  The 86 WRONGLY interprets it as (27^3)^-1.  That's a major
> error in the calculator that, AFAIK, TI has not fixed in new ROM versions.
>
>     -Scott
>
>
>

References:

From:

Re: TI-M: TI-89 root question

From: "Scott Noveck" <noveck@pluto.njcc.com>