Casio fx-3650P Programming Manual page 13

２． The sum of an arithmetic progression with first term
terms is given by
B A –

A + A + ------------ -

C 1 –
C
terms
ON MODE MODE
？→ Ａ：？→ Ｂ：？→ Ｃ： （Ａ ＋ Ｂ）Ｃ ÷２→ Ｄ：Ｄ ＜ 24 STEP ＞
OUTPUT Ｄ: sum of arithmetical progression
The of an arithmetic progression of 10th terms, with first term 1 and last term 28, is:
１＋４＋７＋・・・＋２８＝１４５
Prog 1
1 EXE
EXE
2 8
1 0 EXE

...
+ + B

PRGM
MODE
A
and final term
COMP
1 MODE 1
S A
S A
S A
S A
B
, consisting of
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
C
11