Casio fx-570EX User Manual page 17

(MathI/MathO)
(LineI/LineO)
Pol, Rec: Pol converts rectangular coordinates to polar coordinates, while
Rec converts polar coordinates to rectangular coordinates.
• Specify the angle unit before
performing calculations.
• The calculation result for r and θ
and for x and y are each
assigned respectively to
variables x and y.
• Calculation result θ is displayed
in the range of -180° < θ ≦ 180°.
To convert rectangular coordinates
Unit: Degree)
(MathI/MathO)
To convert polar coordinates
Unit: Degree)
(MathI/MathO)
x!: Factorial function.
(5 + 3) ! = 40320
Abs: Absolute value function.
|2 − 7| × 2 = 10
(MathI/MathO)
(LineI/LineO)
Ran#: Function that generates a pseudo random number in the range of
0.000 to 0.999. The result is displayed as a fraction when MathI/MathO is
selected for Input/Output on the setup menu.
To obtain random three-digit integers
RanInt#: Function that generates a pseudo random integer between a
specified start value and end value.
To generate random integers in the range of 1 to 6
nPr, nCr: Permutation (nPr) and combination (nCr) functions.
To determine the number of permutations and combinations possible when
selecting four people from a group of 10
Permutations:
Combinations:
Rnd: Using the Rnd function causes decimal fraction values of the
argument to be rounded in accordance with the current Number Format
setting. For example, the internal and displayed result of Rnd(10 ÷ 3) is
3.333 when the Number Format setting is Fix 3. Using the Norm 1 or Norm
2 setting cause the argument to be rounded off at the 11th digit of the
mantissa part.
To perform the following calculations when Fix 3 is selected for the number
of display digits: 10 ÷ 3 × 3 and Rnd(10 ÷ 3) × 3
(SETUP)(Number Format)(Fix)
()(x)115
(,) 1(,) 5
(Pol)2(,)2 r=2, θ=45
2, 45° to rectangular coordinates (Angle
(Rec)2(,) 45 x=1, y=1
(Abs) 272
(Abs) 272
(RanInt)1(,) 6
()(x)1
2, 2 to polar coordinates (Angle
53(x!)
1000(Ran#)
(The result differs with each execution.)
(The result differs with each execution.)
10(nPr) 4
10(nCr) 4
16
(MathI/DecimalO)
20
20
40320
10
10
459
2
5040
210