Why does the TI-85 do...

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Why does the TI-85 do...
From: Kasper Vibe Grevsen <kaspervg@HOTMAIL.COM>
Date: Fri, 24 Apr 1998 15:16:49 +0200
Organization: Customer at Tele Danmark Erhverv
Reply-To: Kasper Vibe Grevsen <kaspervg@HOTMAIL.COM>
Xref: paladin.american.edu bit.listserv.calc-ti:22631

Hi everybody, does some of you know how to integrate

e^-(0.5x^2) from -infinity to t by hand or by calculator?

When I type in fnInt(e^(-0.5x^2),x,-e99,t) I get 0 for every value of t.
Why?
My calculator is in floating point mode, tolerance set to e-5 and delta to
0.01. My ROM version is 8.0 however the problem occurs on ROM 10.0 machines
too.


Does anybody know of a program for the calculator or my PC, which you could
use to check if some material is e.g. normal distributed? A program (or
add-in to Excel) which can save all the tiresome drawing by hand on
distribution paper?


Kind regards Kasper Vibe Grevsen, Denmark

Follow-Ups:

Re: Why does the TI-85 do...

From: erikanielsen@HOTMAIL.COM