Casio FX-CG10, User Manual

Page: 70 / 608

2-21
k
Coordinate Conversion
u
Rectangular Coordinates
u
Polar Coordinates
• With polar coordinates, can be calculated and displayed within a range of
–180°<
<
180° (radians and grads have same range).
• Be sure to specify Comp for Mode in the Setup screen.
Example Operation
Calculate
r
and ° when
x
= 14 and
y
= 20.7
!m
(SET UP)
cccccc
1
(Deg)
J
K
6
(
g
)
5
(ANGLE)
6
(
g
)
1
(Pol()
14
,
20.7
)
w
Calculate
x
and
y
when
r
= 25 and = 56°
2
(Rec() 25
,
56
)
w
k
Permutation and Combination
u Permutation u Combination
• Be sure to specify Comp for Mode in the Setup screen.
Example 1 To calculate the possible number of different arrangements using 4
items selected from among 10 items
Formula Operation
10
P
4
= 5040
10
K
6
(
g
)
3
(PROB)
2
(
n
P
r
) 4
w
Example 2 To calculate the possible number of different combinations of 4 items
that can be selected from among 10 items
Formula Operation
10
C
4
= 210
10
K
6
(
g
)
3
(PROB)
3
(
n
C
r
) 4
w
1 24.989
→
24.98979792 (
r
)
2 55.928
→
55.92839019 ( )
θ
1 24.989
→
24.98979792 (
r
)
2 55.928
→
55.92839019 ( )
θ
1 13.979
→
13.97982259 ( x )
2 20.725
→
20.72593931 ( y )
1 13.979
→
13.97982259 ( x )
2 20.725
→
20.72593931 ( y )
n ! n !
n
P
r
=
n
C
r
=
( n – r )! r ! ( n – r )!
n ! n !
n
P
r
=
n
C
r
=
( n – r )! r ! ( n – r )!