Texas Instruments TI-89 사용자 설명서

Additional Graphing Topics

 478

For example, consider the previous three-piece function.

 For information about similarities and differences between functions and 

programs, refer to Programming.

A multi-statement, user-defined function can have many of the control and decision-
making structures (

, 

, 

, etc.) used in programming. When creating the 

structure of a function, it may be helpful to visualize it first in a block form.

Ê

Func and EndFunc must begin and end the function.

When entering a multi-statement function on the Y= Editor or Home screen, you must 
enter the entire function on a single line.

x < 

Mp

4 sin(x)

x 

|

 

M p

 and x < 0

2x + 6

x 

|

 0

6 – x

2

Ê

Ê

Func

  If x<

 M p

 Then

  Return 4

ù

sin(x)

ElseIf x>=

-p

 and x<0 Then

  Return 2x+6

Else

  Return 6–x^2

EndIf

EndFunc