Texas Instruments TI-89 사용자 설명서

Programming

 586

•

You can create functions that expand on the TI-89 Titanium’s built-in functions. You 
can then use the new functions the same as any other function.

•

Functions return values that can be graphed or entered in a table; programs cannot.

•

You can use a function (but not a program) within an expression. For example: 

ù

 is valid, but not 

ù

.

•

Because you pass arguments to a function, you can write generic functions that are 
not tied to specific variable names.

 You can create a function from the Home screen, but the Program Editor is more 

convenient for complex, multi-line functions.

Differences Between Functions and Programs

Differences Between Functions and Programs

Differences Between Functions and Programs

Differences Between Functions and Programs

This guidebook sometimes uses the word command as a generic reference to 
instructions and functions. When writing a function, however, you must differentiate 
between instructions and functions.

A user-defined function:

•

Can use the following instructions only. Any others are invalid.

(all forms)

! ( § key)