Casio fx-3650P

32
22 Rotation
The following matrix rotates a point , in the plane,
through an angle of in the anti-clockwise direction.
Program
？→ Ｘ：？→ Ｙ：？→ Ａ：Ｘ → Ｃ：Ｙ → Ｄ：Cｃｏｓ Ａ － Ｄｓｉｎ Ａ → Ｘ：Ｃｓｉｎ
Ａ ＋ Ｄｃｏｓ Ａ → Ｙ：Ｘ Ｙ ＜ 43 STEP ＞
INPUT X, Y : point befor rotation A : rotation angle
OUTPUT Ｘ,Ｙ : point after rotation
Execution Example:
Find the location of the point (1,0) after rotation through an angle of .
To obtain the answer in radians, press before
executing the program.
x y,
(
)
θ
θ
(x’, y’)
(x, y)
x′
y′



θ cos
θ sin
θ sin–
θ cos




x
y



=
ON
MODE MODE MODE
1
PRGM
MODE
1
COMP
1
P1
x y,
(
) θ
x y,
(
)
π
3
---
MODE MODE
MODE MODE
2
Rad
S A
D R
P2 P3 P4 G
Prog
1
1
EXE
0
EXE
S A
D R P1
P1
P2 P3 P4 G
SHIHT
EXP
π
3
EXE
Disp
S A
D R P1
P1
P2 P3 P4 G
EXE
S A
D R P1
P1
P2 P3 P4 G
8 8 8 8 8 8
MODE MODE MODE MODE
2
関数電卓事例集 .book 32 ページ ２００２年９月２日 月曜日 午後６時５１分