Coordinate Conversion; Permutation And Combination; Rectangular Coordinates; Polar Coordinates - Casio FX-CG20 AU User Manual

k Coordinate Conversion
u Rectangular Coordinates
• With polar coordinates,
< 180° (radians and grads have same range).
–180°<
• Be sure to specify Comp for Mode in the Setup screen.
r
Calculate and ° when
1 1 24.989 24.989
2 2 55.928 55.928
x
Calculate and
1 1 13.979 13.979
2 2 20.725 20.725
k Permutation and Combination
u Permutation
n P r = n P r =
• Be sure to specify Comp for Mode in the Setup screen.
Example 1
P = 5040
10 4
Example 2
C = 210
10 4
can be calculated and displayed within a range of
Example
x
= 14 and
→ →
24.98979792 (r) 24.98979792 (r)
→ →
55.92839019 ( ) θ 55.92839019 ( ) θ
y r
when = 25 and
→ →
13.97982259 (x) 13.97982259 (x)
→ →
20.72593931 (y) 20.72593931 (y)
n ! n !
( n – r )! ( n – r )!
To calculate the possible number of different arrangements using 4
items selected from among 10 items
Formula
To calculate the possible number of different combinations of 4 items
that can be selected from among 10 items
Formula
u Polar Coordinates
!m(SET UP)cccccc
y
= 20.7
1(Deg)J
K6(g)5(ANGLE)6(g)1(Pol()
14,20.7)w
2(Rec() 25,56)w
= 56°
10K6(g)3(PROB)2(
10K6(g)3(PROB)3(
2-21
Operation
u Combination
n ! n !
n C r = n C r =
r ! ( n – r )! r ! ( n – r )!
Operation
P ) 4w
n r
Operation
C ) 4w
n r