Re: A89: [OT] Some general TI-89 Qs.

To: assembly-89@lists.ticalc.org
Subject: Re: A89: [OT] Some general TI-89 Qs.
From: Scott Dial <wrath@calc.org>
Date: Thu, 13 Apr 2000 16:03:01 -0500
Organization: ByMe Inc. Technologies \ TCPA
References: <38EA2852001DD3E0@mypad.MYPAD.COM> (added by postmaster@mypad.MYPAD.COM)
Reply-To: assembly-89@lists.ticalc.org




groman@thehelm.com wrote:
> 6) If I have a recursive formula for a sequence, can TI-89 help me find an
> explicit formula???

The easiest way is to put the values you get from a recursive equation
into a a plot, and then do a regression on it.

ie.  f(n+1) = n + 1 | f(0) = 0

{0,1,2,3,4} -> x
{0,1,2,3,4} -> y

LinReg x,y

regeq(x) is the explicit form.

> 7) Can I see the algebra steps that my calculator does while factoring or
> expanding?

Get a HP... it will show you
 
> I guess that's it for now. Thanx.
> 
> Groman.
> 
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Scott "_Wrath_" Dial
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