<p>Ti-89 is indeed better. A word of warning though, it’s not allowed on SAT I or ACT, but you can use on SAT II and AP Calc. That being said, it’s really not needed, and in order to use it properly you need a good understanding of the material.</p>
<p>Ti-89 is indeed better. A word of warning though, it’s not allowed on SAT I or ACT, but you can use on SAT II and AP Calc. That being said, it’s really not needed, and in order to use it properly you need a good understanding of the material.</p>