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.