Texas Instruments TI-84 Plus Guide Book

Chapter 6: Sequence Graphing 157
• 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
Nonrecursive SequencesNonrecursive Sequences
Nonrecursive Sequences
In a nonrecursive sequence, the
nth term is a function of the independent variable n.
Each term is independent of all other terms.
For example, in the nonrecursive sequence below, you can calculate
u(5) directly,
without first calculating
u(1) or any previous term.
The sequence equation above returns the sequence 2, 4, 6, 8, 10, … for
n = 1, 2, 3, 4, 5, … .
Note: You may leave blank the initial value u(nMin) when calculating nonrecursive
sequences.

Texas Instruments TI-84 Plus Specifications

General

Battery type	AAA
Power source	Battery
Number of batteries supported	4
Type	Graphing
Cover	No
Form factor	Pocket
Control type	Buttons
Product color	Black
USB port	Yes
USB 2.0 ports quantity	1
Digits	- digits
Display number of lines	8 lines
Display number of characters	16
RAM capacity	0.024 MB
ROM capacity	0.480 MB
Storage media type	-