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6-2 Sequence aplet
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
U1(1) field and begin defining your sequence.
1 >(17(5@ 1 >(17(5@
>@
Note: You can use the
, , and menu
keys to assist in the entry
of equations.
>(17(5@
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.
–A Stairsteps graph plots n on the horizontal axis and
U
n
on the vertical axis.
–A Cobweb graph plots U
n-1
on the horizontal axis
and U
n
on the vertical axis.
>6+,)7@
SETUP-PLOT
>6+,)7@
CLEAR
*e,*A,8>(17(5@
*A,8>(17(5@
U
1
1= U
2
1= U
n
U
n 1–
U
n 2–
+= n 3>