64
NPR
PURPOSE
: Returns the permutation nPr for the values of n and r.
FORMAT
:
NPR
( n value
,
r value )
Numeric expression Numeric expression
EXAMPLE
: X = NPR(69,20)
PARAMETERS
: n value and r value should follow: 0
≤
r
≤
n < 10
10
EXPLANATION
:
1. Returns the permutation: nPr = n! / (n-r)!
2. A fractional value as either n or r generates an error.
SEE
: FACT, NCR
PI
PURPOSE
: Returns the value of
π
.
FORMAT
: PI
EXPLANATION
:
1. Returns the value of
π
.
2. The value of
π
used for internal calculations is 3.1415926536.
3. The displayed value is rounded off to 10 digits, so the value of
π
is displayed
as 3.141592654.
POL
PURPOSE
: Converts rectangular coordinates (x, y) to polar coordinates (r,
θ
).
FORMAT
:
POL
( x-coordinate
,
y-coordinate)
Numeric expression Numeric expression
EXAMPLE
: POL(3,2)
PARAMETERS
: x- and y-coordinates: numeric expressions not both zero.
EXPLANATION
:
1. Converts rectangular coordinates (x, y) to polar coordinates (r,
Θ
). The
following relational expressions are used at this time:
r =
√
cos
θ
= x /
√
sin
θ
= y /
√
2. The value of r is automatically assigned to variable X, wile
θ
is automatically
assigned to variable Y
3. The value of
θ
is the ]-180°, 180°] or ]-
π
Radians,
π
Radians] range.
SEE
: REC
F
0
F
0
F
0
x
2
+ y
2
x
2
+ y
2
x
2
+ y
2
