TIB: RE: RE: TI-89 Solve question
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TIB: RE: RE: TI-89 Solve question
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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