Ti NSpire cx - 2 questions, last equation, and touch pad?

[Xtensity]

Sorry, title limited on what I could type. I just got this calculator and am having two big issues with it.

1) I cannot figure out how to reuse my most recently typed equation. For example if I type in a insanely long multiple variable equation and evaluate, the only way I can figure out how to get it back is to type it all out again, if I want to change something and re-evaluate. On my Ti 89 I could just do 2nd + Entry.

2) How can I disable the touch pad? I have no desire to use it and I see no reason to use it, and it is causing me to misclick through the menus way too often.

 

[jedishrfu]

I don't have a ti nspire cx but I found this online:

http://www.dummies.com/how-to/content/copy-paste-and-edit-expressions-and-answers.html

They mention copy and paste of the previous equation.

 

[Xtensity]

Hm the ctrl+c and ctrl+v combo works for the equations I tried, but it's a little tedious.

I had tried scrolling up and clicking to bring the equation back down, but I specifically was unable to get this to do anything with summation operations. The copy and paste method should make due for now... thanks!

 

[jedishrfu]

I also found an online manual that talks about modifying the settings of the touchpad but I didn't see where it says you can disable it completely.

http://www.usna.edu/MathDept/_files/documents/resources/TI-Nspire_CX_Handheld_GettingStarted_EN.pdf