Summing Geometric Progressions - Casio fx-3650P Programming Manual

07

Summing Geometric Progressions

１． The sum up to the
B
term may be calculated:
C
k 1 –
∑
AB =
k = 1
ON MODE MODE
？→ Ａ：？→ Ｂ：？→ Ｃ：Ａ（１－ Ｂ ＾ Ｃ）÷（１－ Ｂ）→ Ｄ：Ｄ ＜ 30 STEP ＞
OUTPUT Ｄ: sum of geometric progression
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
Prog 1
1 EXE
EXE
3
5 EXE
12
C
th term of the geometric progression with first term
2 ...
A + AB + AB +
n
( )
A 1 B –
= ----------------------- -
1 B –
PRGM
MODE
C 1 –
+ AB
COMP
1 MODE 1
S A
S A
S A
S A
A
and ratio
1
P1 P1 P2 P3 P4 D R G
P1 P1 P2 P3 P4 D R G
P1 P1 P2 P3 P4 D R G
P1 P1 P2 P3 P4 D R G