Re: TI-85 and log(-4)

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: TI-85 and log(-4)
From: Jesse Samuels <JESSE.SAMUELS@ASU.EDU>
Date: Fri, 25 Jul 1997 10:59:48 -0700
Comments: To: David Socher <dsocher@ARISTOTLE.NET>
In-Reply-To: <33d7a2ec.6217070@news.aristotle.net>
Reply-To: JESSE.SAMUELS@ASU.EDU

dunno, but clearly if you use def on ln function, it is undefined for neg
numbers! gotta go!

On Thu, 24 Jul 1997, David Socher wrote:

> My algebra instructor had everyone punch the log of a negative number
> into their calculator to demonstrate that this could not be done.
> Everyone got an error message except me and my TI-85.  I got something
> that looks like a complex number.  My instructor couldn't explain it.
> The manual doesn't to cover it.  Can anyone tell me what's happening
> here?
>
> David Socher
>

Follow-Ups:

Re: TI-85 and log(-4)

From: Geoff Hagopian <galois@cyberg8t.com>

References:

TI-85 and log(-4)

From: David Socher <dsocher@ARISTOTLE.NET>

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