Re: ti-85 solver problem

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: ti-85 solver problem
From: GARY WARDALL <gwardall@LAKEFIELD.NET>
Date: Sat, 21 Mar 1998 18:11:59 -0600
Comments: To: wnc@IDONTWANTNOSPAM.WCO.COM
Reply-To: GARY WARDALL <gwardall@LAKEFIELD.NET>

When using Solver make sure your bound does not contain
any singularities.  In the equation:  1/x=0.25 there is a singularity
at x=0.

I tried:

x=2
bound={.0001,10}

and I got

x=4

Good Luck

Gary Wardall







>Hi, i've had the ti-85 for quite a long time, and recently i ran into a
>solver problem. using the built in solver (the interactive one, not the
>command line Solver()) I entered 1/x=0.25, and it cannot find the
>solution, i reset the calc, same thing, i put it in (1/x)=0.25, i did
>x^-1=0.25, but it doesn't work. If i use the command line of
>Solver(1/x=0.25,x,9) it makes x=4 correctly. I have ROM ver 9, i tried on
>a calc with ver 10 with no programs or anything same deal, even limiting
>the range didn't seem to help much. the command line solver finds it very
>quickly. Does anyone have a solution for this? (or a workaround)
>
>any info appreciated
>
>wnc@wco.com
>
>--