<p>how to use your calculator:</p>
<p><a href="http://www.ticalc.org%5B/url%5D">www.ticalc.org</a></p>
<p>Click "Basics" then "Calculators" then 89 Titanium - tells ya all about it and gives a link to the online version of the manual included in the package the 89 Titanium comes in. I just read the manual, but you can try this link too:</p>
<p><a href="http://www.ti-89.org/faq.html%5B/url%5D">http://www.ti-89.org/faq.html</a></p>
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<p>For the SAT, I developed "SAT OS" - it covers any formulas/equations/concepts/theorms that are involved on the SAT. The main object is to speed up any computations that you have to do on the SAT without having to know any of the equations involved - if you are working with circles, hit circles, and enter any information given in the problem and it will crank out that answer for you, very quickly. The link to download it is here:</p>