Calculator Problem-- Pleaase Help

Test Preparation AP Test Preparation
1

<p>Im freaking out right now</p>

<p>whenever i put something calculus (derivative, integral) into my calculator i get "argument error" I am using a TI-89 Titanium</p>

<p>I'm pretty sure im putting it in right too for example</p>

<p>d(2x^2,x) = argument error</p>

<p>PLEASE SOMEONE HELP =//</p>

2

<p>ehh nvm guys, i just reset the calculator and it began to work... but if ne1 knows wut went wrong i would like to know</p>

3

<p>This has happened to me a lot of times too. Idk why, but if you "clear a-z" (F6, press 1) the differentiation/integration starts working again.</p>