hp40g+.book Page 9 Friday, December 9, 2005 1:03 AM

HELP and press . The menu of help topics appears.

Each help topic includes the required syntax, along with real sample values. You can copy the syntax, with the sample values, to the HOME screen or to the Equation

Writer, by pressing .

T I P If you highlight a CAS command and then press 2, help about the highlighted command is displayed.

You can display the online help in French rather than English. For instructions, see “Online Help language” on page 15-4.

CAS functions in the Equation Writer

You can display a menu of CAS functions in four ways:

•by displaying the MATH menu from HOME and then

pressing , or

•opening the Equation Writer and pressing ,

•opening the Equation Writer and selecting a function from a soft-key menu, or

•opening the Equation Writer and pressing

.

You can also directly type the name of a CAS function when you are in ALPHA mode.

Note that in this section, CAS functions available from the sot-key menus in the Equation Writer are described. CAS functions available from the MATH menu are described in “CAS Functions on the MATH menu” on page 14-45.

N O T E When using CAS, you should be aware that the required syntax will vary depending on whether you are applying the command to an expression or a function. All CAS commands are designed to work with expressions; that is, they take expressions as arguments. If you are going to use a function—for example, F—you need to specify an expression made from this function, such as F(x), where x is the independent variable.

Computer Algebra System (CAS)

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