Quick note to avoid disappointment: maxima itself is a text application. wxMaxima is a graphical front-end with conventional math notation. Output only. You'll frequently encounter text/command-line options, though. E.g., when you pick a command like differentiate from the menu, and you want to apply it to the previous result, you'll have to enter something like %o10 (no need to guess; you'll see the reference in the output). Idk if there's a better GUI.