HP 40gs HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010.p - Page 165
The MATH menus,
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29 THE MATH MENUS The MATH menu is accessed via the key below the APLET key. Any time that you are typing a value into any formula or setup screen you can insert mathematical functions via the MATH key. In reality the MATH button gives you access not just to one menu but to four. The menus are: • The MATH menu - this is the default menu containing the majority of commonly used commands. The commands in this list are available on both the hp 39gs and hp 40gs. • The CONS menu • The PHYS menu - this 'constants' menu is only really of interest to programmers. It contains the names of various environment variables, allowing easy pasting into programs. Generally it is easier to simply type them. - this 'physical constants' menu contains the values of many of the physical constants required by students in physics and chemistry. • The CAS menu - this menu contains those commands which are only available on the hp 40gs and are associated with the CAS. On the hp 39gs this screen key is blank and typing the command manually will result in an 'unknown user function' error. Since they are not relevant for both calculators, the CAS commands are covered in the section on the CAS for the hp 40gs. The following pages will cover: • how to use and access the commands • the PHYS commands • the MATH commands 165
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