HP 40gs - Page 84

6-2 Sequence aplet
Open the
Sequence aplet
1. Open the Sequence aplet.
Select
Sequence
The Sequence aplet
starts in the Symbolic
view.
Define the
expression
2. Define the Fibonacci sequence, in which each term
(after the first two) is the sum of the preceding two
terms:
, , for .
In the Symbolic view of the Sequence aplet, highlight
the U
1(1) field and begin defining your sequence.
1 1
Note: You can use the
, , ,
, and menu keys to assist in the entry of
equations.
Specify plot
settings
3. In Plot Setup, first set the SEQPLOT option to
Stairstep. Reset the default plot settings by
clearing the Plot Setup view.
SETUP-PLOT
CLEAR
8
8
U
1
1= U
2
1=
U
n
U
n 1–
U
n
2
–
+= n 3>
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