<p>Not true. Textbooks are organized around the use of calculators, as well as exams. But some calculators may not be allowable for the AP or SAT. </p>
<p>Textbooks are often organized around the use of Ti-84’s, and to actually learn calculus you can’t depend on a Ti-89 (As CSM said, your teacher will probably not allow any calculators). </p>
<p>Ti-89 takes a while to learn, and it may be confusing… You won’t need it if you’re not going to be a STEM major. If you choose to get a Ti-89, you’ll have to have self-restraint so you don’t use it needlessly *before *learning how to do calculus concepts by hand, and *remember *how to do them without the calculator for the exam as well.</p>