Texas Instruments TI-89 사용자 설명서

Sequence Graphing

 357

If a sequence requires an initial value but you do not enter one, you will get an error 
when graphing.

On the Y= Editor, Axes lets you select the axes that are used to graph the sequences.  
Optionally, for sequences only, you can select different axes for the graph. TIME is the 
default.

The Y= Editor maintains an independent function list for each Graph mode setting. For 
example, suppose:

•

In FUNCTION graphing mode, you define a set of 

 functions. You change to 

SEQUENCE graphing mode and define a set of 

 sequences.

•

When you return to FUNCTION graphing mode, your 

 functions are still defined 

in the Y= Editor. When you return to SEQUENCE graphing mode, your 

 

sequences are still defined.

 You can use the 

 command from the Home screen (see Technical 

Reference) to define functions and equations for any graphing mode, regardless of the 
current mode.

Plots n on the x axis and u(n) on the y axis.

Plots u(n

-

1) on the x axis and u(n) on the y axis.

Lets you select the x and y axes.