Casio CFX-9970G, Руководство пользователя

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219
16-2 Inputting a Recursion Formula and
Generating a Table
Example 1 To input
a
n
+1
= 2
a
n
+ 1 and generate a table of values as the
value of
n
change from 1 to 6
Make
a
1
= 1.
1. Specify the recursion formula type as linear recursion between two terms and
then input the formula.
c 4
(
n
,
a
n
···)
2
(
a
n
)
+b
2. Press w5 (RANG) to display the table range setting screen, which contains
the following items.
• {
a
0
} / {
a
1
} ... setting of value for {
a
0
(
b
0
)}/{
a
1
(
b
1
)}
The table range settings specify the conditions that control the value of variable
n
in the recursion formula, and the initial term of the numeric value table. You should
also specify a starting point for the pointer when drawing a convergence/diver-
gence graph (WEB graph) for a formula for linear recursion between two terms.
Start ................ Starting value of variable
n
End ................. Ending value of variable
n
a
0
,
b
0
............... Value of 0th term
a
0
/
b
0
(
a
1
,
b
1
.... Value of 1st term
a
1
/
b
1
)
a
n
Str,
b
n
Str ...... Pointer starting point for convergence/divergence graph
(WEB graph)
• The value of variable
n
increments by 1.
3. Specify the range of the table.
2 (
a
1
)
b w g w b w
4. Display the table of the recursion formula. At this time, a menu of table
functions appears at the bottom of the screen.
J6 (TABL)
Currently selected cell (up to six digits)
Value in currently highlighted cell
P.225