Texas Instruments -84 Plus, Руководство пользователя

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Chapter 6: Sequence Graphing 156
Selecting Graph Styles Selecting Graph Styles Selecting Graph Styles Selecting Graph Styles
The icons to the left of
u( n )
,
v( n )
, and
w( n )
represent the graph style of each sequence
(Chapter 3). The default in Seq mode is
í
(dot), which shows discrete values. Dot,
ç
(line), and
è
(thick) styles are available for sequence graphing. Graph styles are
ignored in Web format.
Selecting and Deselecting Sequence Functions Selecting and Deselecting Sequence Functions Selecting and Deselecting Sequence Functions Selecting and Deselecting Sequence Functions
The TI-84 Plus graphs only the selected sequence functions. In the Y= editor, a
sequence function is selected when the
=
signs of both
u( n )=
and
u( n Min)=
are
highlighted.
To change the selection status of a sequence function, move the cursor onto the
=
sign
of the function name, and then press
Í
. The status is changed for both the
sequence function
u( n )
and its initial value
u( n Min)
.
Defining and Editing a Sequence Function Defining and Editing a Sequence Function Defining and Editing a Sequence Function Defining and Editing a Sequence Function
To define or edit a sequence function, follow the steps in Chapter 3 for defining a
function. The independent variable in a sequence is
n
.
In Seq graphing mode, you can enter the sequence variable in either of two ways.
• Press
„
.
• Press
y N
[N]
.
You can enter the function name from the keyboard.