<p>Can anybody know how to INPUT the formula into the TI83+ tell me how to do that.
Thanks a lot!</p>
<p>use the graph and then "calc"</p>
<p>Go online and get the program "PolySimult" and it's SUPER easy with that. The program comes standard on the 89 Titanium.</p>
<p>yea thats a good idea for higher powers too</p>
<p>I just used a simple program I wrote back in middle school in TI-BASIC to prompt you for the three values then solve the equation.. go to <a href="http://www.ticalc.org%5B/url%5D">http://www.ticalc.org</a> and you can get one from there</p>