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251
16-2 Inputting a Recursion Formula and
Generating a Table
Example 1 To input an+1 = 2an + 1 and generate a table of values as the
value of n change from 1 to 6
Make
a1 = 1.
1. Specify the recursion formula type as linear recursion between two terms and
then input the formula.
c4(
n, an...)
2(an)+b
2. Press w and then press 5 (RANG) to display the table range setting screen.
w5(RANG)
1 (a0) ........... Value for a0 (b0)
2 (a1) ........... Value for a1 (b1)
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/divergence 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, b0 ............... Value of 0th term a0/b0 (a1, b1 .... Value of 1st term a1/b1)
anStr, bnStr ...... 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(
a1)
bwgwbw
1 2 3456
123456
P.258
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