<p>Hi all,</p>
<p>So I bought an HP 40gs for my SAT math2 (didn't know that TI was the more "preferred" among students before I bought it). I can't quite figure out how to program it for the common formulae. I enter the syntax EXACTLY as it is given in the Barron's book or other threads, but it keeps showing me that there is a syntax error.</p>
<p>Is there anyone who uses an HP calculator and can help me out? Help much appreciated!</p>