<p>I downloaded a text file in the main folder of my TI-89 but when I try to open it, I get the message: "Name is not a function or a variable" or "Non-algebraic variable in expression." I need some help on how to open this. By the way, I got this from ticalc.org and is a SAT II Math IIC text file with some equations. Help please.</p>
<p>open it by using a program in "apps". it's called text editor. what you're doing right now is trying to run a text file</p>
<p>Thanks, man.</p>