Casio fx-3650P

12
07 Summing Geometric Progressions
１． The sum up to the th term of the geometric progression with first term and ratio
term may be calculated:
Program
？→ Ａ：？→ Ｂ：？→ Ｃ：Ａ（１－ Ｂ ＾ Ｃ）÷（１－ Ｂ）→ Ｄ：Ｄ ＜ 30 STEP ＞
OUTPUT Ｄ: sum of geometric progression
Execution Example:
Calculate the sum up to the 5th term of the geometric progression with first term 1 and ratio
term 3.
１＋３＋９＋２７＋８１＝１２１
CA
B
AB
k 1–
k 1=
C
∑
AABAB
2
…
AB
C 1–
++ ++=
A 1 B
n
–()
1 B–
------------------------=
ON
MODE MODE MODE
1
PRGM
MODE
1
COMP
1
P1
Prog
1
S A
D R P1
P1
P2 P3 P4 G
1
EXE
S A
D R P1
P1
P2 P3 P4 G
3
EXE
S A
D R P1
P1
P2 P3 P4 G
5
EXE
S A
D R P1
P1
P2 P3 P4 G
関数電卓事例集 .book 12 ページ ２００２年９月２日 月曜日 午後６時５１分