Casio fx-3650P

10
06 Summing Arithmetic Progressions
１． The sum up to the th term of an arithmetic progression with first term and
difference term , may be calculated by:
Program
？→ Ａ：？→ Ｂ：？→ Ｃ：Ｃ（２ Ａ ＋（Ｃ －１）Ｂ）÷２→ Ｄ：Ｄ ＜ 30 STEP ＞
OUTPUT Ｄ: sum of arithmetical progression
Execution Example:
Calculate the sum up to the 10th term of the arithmetic progression with first term 1 and
difference term 3.
１＋４＋７＋・・・＋２８＝１４５
CA
B
Ak1–()B+()
k 1=
C
∑
AAB+()A 2B+()
…
AC1–()B+()++ ++=
C
2
---- 2AC1–()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
1 0
EXE
S A
D R P1
P1
P2 P3 P4 G
関数電卓事例集 .book 10 ページ ２００２年９月２日 月曜日 午後６時５１分