<p>Does anyone know how to do logs on the TI-89 titanium? Not ln. Log. Thanks so much!</p>
<p>Go to the catalog and select "log(" or simply type in "log("</p>
<p>go to log and press the button. It is not that hard.</p>
<p>If you are talking about how to put in Log base 3 of 4 then you will have to put log4 divided by log 3</p>
<p>Tell me if you get this and if it works. This is what I use and it works fine.</p>