Graphing inequalities with x values

[Ray Fox]

How do you graph x= or x< on the TI-Nspire.

There was an inequalz app for the 84+
Is there anything similiar for the Nspire?

Ray Fox

[Neville Windsor]

It's actually very easy. On a G&G page, backspace to remove the equality sign in the function entry line and then enter > or < followed by the required expression. If you want >= or <= hit the ctrl key prior to > or <. The calculator shades the relevant region.
Neville Windsor
Tasmanian Academy - Hellyer Campus
Burnie, Tasmania

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[Neville Windsor]

My apologies - I just realised I mis-read your question!

-----Original Message-----
From: tins...@googlegroups.com [mailto:tins...@googlegroups.com] On Behalf Of Ray Fox
Sent: Friday, 16 October 2009 8:32 AM
To: tinspire
Subject: [tinspire] Graphing inequalities with x values

[John Hanna]

If you want to graph a vertical line, try constructing a perpendicular to
the x-axis and then show its equation (menu>actions>coordinates &
equations).

You cannot graph or construct a vertical inequality (yet) but to graph what
appears to be a 'vertical' inequality, try y>1000000(x-a) or y<1000000(x-a),
where a is your x < or > value.

Sail Upwind,
John Hanna
T3 . Teachers Teaching with Technology
973.398.3815
jeh...@optonline.net
www.johnhanna.us
"the contact between the acute angle of a triangle and a circle has no less
effect than that of God's finger touching Adam's in Michaelangelo." -
Wassily Kandinsky

[Sean Bird]

Back on July 2 I shared a file and said, "After a fellow teacher asked about how to easily graph 'vertical inequalities', I put together the attached document to make life easier for those who are authoring documents or just want a quick visual. After setting v what you want it to be, you can delete the slider by clicking on it and pressing backspace (a.k.a. "clear")."

I added a page 5 for "x="
It is easily modified by double clicking to change the coordinate or grabbing and dragging the point. (I just saw that John explained some of the workings of this.)
Hide things (ctrl menu or menu>Actions>Hide/show)


Enjoy,
--
Sean Bird
Covenant Christian High School
Indianapolis, IN
Website: http://covenantchristian.org/bird
Psalm 111:2 “Great are the works of the LORD, studied by all who delight in them.”

[Ray Fox]

Thanks ever so much.
It works as advertised. Easy and efficient.

Ray

>  x_ineq_graphs.tns
> 16KViewDownload- Hide quoted text -
>
> - Show quoted text -

[Dr. Dan I]

I posted a file called vertical inequalities in the files section. It
is based on Sean's file, but has all of the inequalities on one page.
You change the vertical line by changing the value of the variable v.
The slider will change between the different types of inequalities.

Dan