Re: piecewise graphs

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: piecewise graphs
From: Jacky Peterson <peterson_j@mc.maricopa.edu>
Date: Wed, 19 Nov 1997 05:43:52 +0000
Organization: Mesa Community College
Reply-To: peterson_j@mc.maricopa.edu

On Fri, 14 Nov 1997, Jeff wrote:
>Subject: piecewise graphs

>is there a way to graph piecewise functions on the TI-85?
>piecewise as in:
>
>f(x) = { x^2, x<0
>         x+1, x>=1
>and so on...

Try this:

y1=x^2/(x<0)
y2=(x+1)/(x>=1)
or 

for f(x)=2x^2+x , x<4 and 10<x
y2=(2x^2+x)/({x<4,x>10})
 or you can set it up this way

y1={x<4,x>10}
y2=(2x^2+x)/y1

I like the division so much better since it removes any of the “graph
connect” 
lines that occur when you use multiplication.

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