HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 19

chapter-1.fm Page 7 Friday, December 16, 2005 2:20 PM HELPWITH Example The HP 40gs built-in help is available in HOME only. It provides syntax help for built-in math functions. Access the HELPWITH command by pressing SYNTAX and then the math key for which you require syntax help. Press SYNTAX Math keys Getting started Note: Remove the left parenthesis from built-in functions such as sine, cosine, and tangent before invoking the HELPWITH command. Note: In the CAS system, pressing the will show the CAS help menu. SYNTAX HOME ( ) is the place to do non-symbolic calculations. (For symbolic calculations, use the computer algebra system, referred throughout this manual as CAS). Keyboard keys. The most common operations are available from the keyboard, such as the arithmetic (like ) and trigonometric (like ) functions. Press to complete the operation: 256 displays 16. . MATH menu. Press to open the MATH menu. The MATH menu is a comprehensive list of math functions that do not appear on the keyboard. It also includes categories for all other functions and constants. The functions are grouped by category, ranging in alphabetical order from Calculus to Trigonometry. • The arrow keys scroll through the list ( , ) and move from the category list in the left column to the item list in the right column ( , ). • Press to insert the selected command onto the edit line. • Press to dismiss the MATH menu without selecting a command. 1-7