Casio CFX-9850G PLUS, Руководство пользователя и техническое справочное руководство

Страница: 248 / 486

220
• Displayed cell values show positive integers up to six digits, and negative
integers up to five digits (one digit used for negative sign). Exponential display
can use up to three significant digits.
• You can see the entire value assigned to a cell by using the cursor keys to
move the highlighting to the cell whose value you want to view.
• You can also display the sums of the terms (
Σ
a
n
or
Σ
b
n
) by turning on
Σ
Display.
Example 2 To input
a
n
+2
=
a
n
+1
+
a
n
(Fibonacci series) and generate a table
of values as the value of
n
change from 1 to 6
Make
a
1
= 1 and
a
2
= 1.
1. Specify the recursion formula type as linear recursion between three terms and
then input the formula.
3
(TYPE)
3
(
a
n +2
)
4
(
n
,
a
n
···)
3
(
a
n +1
)
+ 2
(
a
n
)
2. Press
w
and then press
5
(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
) and
a
1
(
b
1
)}/{
a
1
(
b
1
) and
a
2
(
b
2
)}
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.
Start ................ Starting value of variable
n
End ................. Ending value of variable
n
a
0
,
a
1
,
a
2
.......... Values of 0th term
a
0
/
b
0
, 1st term
a
1
/
b
1
, and 2nd term
a
2
/
b
2
.
• The value of variable
n
increments by 1.
3. Specify the range of the table.
2
(
a
1
)
b w g w b w b w
16 - 2
Inputting a Recursion Formula and Generating a Table
P.7