[R-sig-teaching] graphing inequalities (intervals) in one varible

[Mattson, Todd]

You may want to try the curve function.  For example:

curve(x^2,-1,1,xlim=c(-3,5),ylim=c(0,9))
 curve(x^2,2,3,add=TRUE)

Todd Mattson
DeVry University

-----Original Message-----
From: r-sig-teaching-bounces at r-project.org [mailto:r-sig-teaching-bounces at r-project.org] On Behalf Of Yahoo!
Sent: Wednesday, May 08, 2013 6:10 AM
To: r-sig-teaching at r-project.org
Subject: [R-sig-teaching] graphing inequalities (intervals) in one varible

Dear All:

It seems a very silly question. But I never tried it before. I am teaching a college algebra class this summer. 

I need some help with graphing intervals on the real line. For examples:

{x | -7<= x < 5 and x > 7}

{x | x > 3}

etc...


thank you very much
abou

========================

AbouEl-Makarim Aboueissa

Sozan Elsalakawy

Mohamed Agamia



246 Auburn Street, #158

Portland, ME 04103

USA



Tel: (207) 797-2724

Email: aboueiss at yahoo.com
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