Recent content by PEMDAS

First off a little about myself as I'm rather new to the forums. I'm currently pursing a degree in management of engineering sciences at Embry-Riddle Aeronautical Univiersity. I really enjoy mathematics, not just soliving equations but reading about the history of it and the great thinkers of...

Never mind I found the key that I apparently hit on accident.

I have a Ti-89 titanium and its not allowing me to enter text into an equation without writing over the equation. Is there a way I can change this? It seems like I could do this before, I thought maybe I accidentally pressed something without realizing it.