Texas Instruments TI-89 User Manual

Page of 1008
Additional Graphing Topics
 471
If the Graph screen contains a function or stat plot that references the current 
contents of 
sysData
, this command will not operate.
Graphing a Function Defined on the Home Screen
Graphing a Function Defined on the Home Screen
Graphing a Function Defined on the Home Screen
Graphing a Function Defined on the Home Screen
In many cases, you may create a function or expression on the Home screen and then 
decide to graph it. You can copy an expression to the Y= Editor, or graph it directly from 
the Home screen without using the Y= Editor.
What Is the “Native” Independent Variable?
What Is the “Native” Independent Variable?
What Is the “Native” Independent Variable?
What Is the “Native” Independent Variable?
On the Y= Editor, all functions must be defined in terms of the current graph mode’s 
“native” independent variable.
Graph Mode
Native Independent Variable
Function
x
Parametric
t
Polar
q
Sequence
n
3D
x, y
Differential Equation
t