Getting Started 25
Getting Started
25
and the answer is returned in cylindrical form. There are four main problems new users often encounter while using the CAS:
• First, the CAS settings have been changed to something incorrect. Use the command CASCFG to reset the CAS settings back to the
defaults.
• Second, a variable is being found and used. Remember earlier when we saw how 'C' and C could behave differently? In a CAS
calculation, variables can be replaced by numerical values if they are found in memory.
• Third, Approximate versus Exact mode. X^2. And X^2 are different because of the period after the number (2.) versus (2). If there
are real numbers in an equation during a CAS command, the results generally will not be returned as expected.
• Fourth, the result is returned in a non-simplified, or a different form than expected. To solve this, the 50g allows the user to rewrite
the equations using many different tools. This allows you to explore mathematical relationships between various functions and lets
you decide on the desired form of the answer.
Troubleshooting and FAQs
The previous exercises and discussion were intended to familiarize you with some of the many functions available on the 50g. If you have
additional questions, or if you require more in-depth information, there are a wide range of resources available at www.hp.com/calcula-
tors. More information may be found on the CD that came with your calculator, the HP manuals cited throughout the previous text, and
learning tutorials available on the HP website, which will guide you through topics ranging from basic operation to advanced program-
ming techniques.
In addition to these resources available on the HP Calculator website, www.hp.com/calculators, there is an HP-sponsored discussion
group accessible on the HP Calculators page where you can ask questions, get answers, and share information with other users in an HP-
sponsored Calculator Community. For more information, visit: www.hp.com/calculators. On the HP Calculators page, click on the Calcu-
lator support forum link under Calculator Community.