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TI-83 Plus Sequence Graphing 182
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.
•
To enter the function name
u
, press
y
[
u
] (above
¬
).
•
To enter the function name
v
, press
y
[
v
] (above
−
).
•
To enter the function name
w
, press
y
[
w
] (above
®
).
Generally, sequences are either nonrecursive or recursive. Sequences
are evaluated only at consecutive integer values.
n
is always a series of
consecutive integers, starting at zero or any positive integer.
Nonrecursive Sequences
In a nonrecursive sequence, the
n
th term is a function of the
independent variable
n
. Each term is independent of all other terms.