Texas Instruments TI-89 Manuale Utente
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Basic Function Graphing
309
From the Home Screen or a Program
From the Home Screen or a Program
From the Home Screen or a Program
From the Home Screen or a Program
You can also define and evaluate a function from the Home screen or a program.
•
Use the
Define
and
Graph
commands. Refer to:
-
“Graphing a Function Defined on the Home Screen” and “Graphing a Piecewise
Defined Function” in Additional Graphing Topics.
Defined Function” in Additional Graphing Topics.
-
“Overview of Entering a Function” in Programming.
•
Store an expression directly to a function variable. Refer to:
-
“Storing and Recalling Variable Values” in Operating the Calculator.
-
“Creating and Evaluating User-Defined Functions” in Calculator Home Screen.
Note:
User-defined functions can have almost any name. However, if you want them to
appear in the Y= Editor, use function names
y1(x)
,
y2(x)
, etc.
Selecting Functions to Graph
Selecting Functions to Graph
Selecting Functions to Graph
Selecting Functions to Graph
Regardless of how many functions are defined in the Y= Editor, you can select the ones
you want to graph.
you want to graph.
Selecting or Deselecting Functions
Selecting or Deselecting Functions
Selecting or Deselecting Functions
Selecting or Deselecting Functions
Press
8 # to display the Y= Editor.
A “Ÿ” indicates which functions will be graphed the next time you display the Graph
screen.
screen.