Casio fx-50F, Руководство пользователя

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E-32
A
Permutation (
n
P
r
)/Combination (
n
C
r
)
Syntax: {
n
}P{
m
}, {
n
}C{
m
}
Example: How many four-person permutations and combinations are possible for a group
of 10 people?
10 1 *
(
n
P
r
)
4 E
10 1 /
(
n
C
r
)
4 E
A
Rounding Function (Rnd)
You can use the rounding function (Rnd) to round the value, expression, or calculation result
specifi ed by the argument. Rounding is performed to the number of signifi cant digits in
accordance with the number of display digits setting.
Rounding for Norm1 or Norm2
The mantissa is rounded off to 10 digits.
Rounding for Fix or Sci
The value is rounded to the specifi ed number of digits.
Example: 200 ÷ 7 × 14 = 400
200/7*14 E
(3 decimal places)
1N
e
1
(Fix)
3
(Internal calculation uses 15 digits.)
200/7 E
*14 E
Now perform the same calculation using the rounding (Rnd) function.
200/7 E
(Calculation uses rounded value.)
1 0
(Rnd)
E
10P4
5040
10P4
5040
10C4
210
10C4
210
200÷7×14
400
200÷7×14
400
200÷7×14
400000
200÷7×14
400000
200÷7
28571
200÷7
28571
An s×14
400000
An s×14
400000
200÷7
28571
200÷7
28571
Rnd ( Ans
28571
Rnd ( Ans
28571