Re: TIB: RE: RE: TI-89 Solve question
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Re: TIB: RE: RE: TI-89 Solve question
Wow, perhaps this is one of the bugs they fixed in 1.05.
On Sun, 27 Feb 2000 21:19:56 -0600 "Matthew" <mobets@flash.net> writes:
>
> same here, and when I did
> Exact(solve(5=12*(1-e^((-1.3E-6)/x)),x))
> I got -13/(10000000ln(7/12)) on my TI-92 with 2.03
>
> I then did it on Tirtual TI emulating my 89 with AMS 1.0
> and got the wrong answer and the error. Finaly, I emulated an 89
> with AMS
> 1.05 and got the corect answers that I got on the 92.
>
> > -----Original Message-----
> > From: owner-ti-basic@lists.ticalc.org
> > [mailto:owner-ti-basic@lists.ticalc.org]On Behalf Of Jesse Lai
> > Sent: Sunday, February 27, 2000 8:53 PM
> > To: ti-basic@lists.ticalc.org
> > Subject: TIB: RE: TI-89 Solve question
> >
> >
> >
> > When I type in that exact string, I get x = 0.0000024. In exact,
> > the answer
> > is x=-13/(10000000*ln(7/12)). I'm using AMS 2.03.
> >
> > Jesse
> >
> > -----Original Message-----
> > From: owner-ti-basic@lists.ticalc.org
> > [mailto:owner-ti-basic@lists.ticalc.org]On Behalf Of Noah R Deneau
> > Sent: Sunday, February 27, 2000 8:41 PM
> > To: ti-basic@lists.ticalc.org
> > Subject: TIB: TI-89 Solve question
> >
> >
> >
> > For some reason I when I try to solve this equation:
> >
> > 5=12*(1-e^((-1.3E-6)/x))
> >
> > For x, using "solve(5=12*(1-e^((-1.3E-6)/x)),x)"
> > I get x = 0
> >
> > I think the real answer is something like x = 2.4E-6
> > I'm in float 12 mode; I get x = 0 for auto or approx. (exact gives
> an
> > overflow error)
> >
> > Any ideas?
> >
> > -Noah Deneau
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