Texas TI-86 用户手册
50
Chapter 3: Math, Calculus, and Test Operations
03MATH.DOC TI-86, Chap 3, US English Bob Fedorisko Revised: 02/13/01 2:19 PM Printed: 02/13/01 3:00 PM Page 50 of 10
03MATH.DOC TI-86, Chap 3, US English Bob Fedorisko Revised: 02/13/01 2:19 PM Printed: 02/13/01 3:00 PM Page 50 of 10
03MATH.DOC TI-86, Chap 3, US English Bob Fedorisko Revised: 02/13/01 2:19 PM Printed: 02/13/01 3:00 PM Page 50 of 10
The MATH PROB (Probability) Menu
- Π'
NUM
PROB
ANGLE
HYP
MISC
!
nPr
nCr
rand
randIn
4
randN
randBi
value
!
Returns the factorial of a real value
items
nPr
number
Returns the number of permutations of items (
n
) taken number (
r
) at a
time
items
nCr
number
Returns the number of combinations of items (
n
) taken number (
r
) at a
time
rand
Returns a random number > 0 and < 1; to control a random number
sequence, first store an integer seed value to
sequence, first store an integer seed value to
rand
(such as
0
¶
rand
)
randInt(
lower
,
upper
ã
,
#ofTrials
ä
)
(random integer) Returns a random integer bound by the specified
integers, lower
integers, lower
integer upper; to return a list of random integers,
specify an integer > 1 for #ofTrials
randNorm(
mean
,
stdDeviation
ã
,
#ofTrials
ä
)
(random normal) Returns a random real number from a normal
distribution specified by mean and stdDeviation; to return a list of
random numbers, specify an integer > 1 for #ofTrials
distribution specified by mean and stdDeviation; to return a list of
random numbers, specify an integer > 1 for #ofTrials
randBin(
#ofTrials
,
probabilityOfSuccess
ã
,
#ofSimulations
ä
)
(random binomial) Returns a random real number from a binomial
distribution, where #ofTrials
distribution, where #ofTrials
‚ 1 and 0 probabilityOfSuccess 1; to
return a list of random numbers, specify an integer > 1 for
#ofSimulations
#ofSimulations
! (factorial) is valid for non-
integers.
integers.
randInt
,
randNorm
, and
randBin
are abbreviated in
the
MATH
PROB
menu.