Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual page 129

2. Specify the recursion type.
a
(TYPE) (
n
a
(
n
a
(
n
3. Input the recursion formula.
4. Specify the table range. Specify a start point and end point for
value for the initial term, and a pointer start point value if you plan to graph the formula.
5. Display the recursion formula number table.
Example Generate a number table from recursion between three terms as
expressed by
sequence), as
RECUR
(TYPE)
n a
( . ··)
n
(SET) (
(TABL)
• Pressing (FORM) will return to the screen for storing recursion formulas.
• Specifying "On" for the " Display" of the Setup screen causes the sum of each term to be
included in the table.
Graphing a Recursion Formula
After generating a number table from a recursion formula, you can graph the values on a line
graph or plot type graph.
1. From the Main Menu, enter the RECUR mode.
2. Make V-Window settings.
3. Specify the recursion formula type and input the formula.
4. Specify the table range, and start and ending values for
term value and pointer start point.
5. Select the line style for the graph.
6. Display the recursion formula number table.
7. Specify the graph type and draw the graph.
(G CON) ... line graph
•
(G PLT) ... plot type graph
•
Example Generate a number table from recursion between two terms as
expressed by
value from 1 to 6. Use the table values to draw a line graph.
Use the following V-Window settings.
Xmin = 0,
Ymin = –15,
) ... {general term of sequence
) ... {linear two-term recursion}
+1
) ... {linear three-term recursion}
+2
a a
=
n +2 n +1
n
changes in value from 1 to 6.
a
( )
n +2
a a
( ) ( )
n +1 n
a
)
1
a a
= 2
n +1
Xmax = 6,
Ymax = 65,
a
}
n
a
+ , with initial terms of
n
n
. If necessary, specify the initial
+ 1, with an initial term of
n
Xscale = 1
Yscale = 5
5-23
n
. If necessary, specify a
a a
= 1, = 1 (Fibonacci
1 2
* The first two values correspond
a a
to = 1 and = 1.
1 2
a n
= 1, as changes in
1