Texas Instruments TI-89 Titanium User Manual page 837

R4Pr()
MATH/Angle menu
xExpression
R4Pr (
) ⇒
xList yList
R4Pr ( ,
xMatrix yMatrix
R4Pr ( ,
Returns the equivalent
( x,y ) pair arguments.
rand()
MATH/Probability menu
]) ⇒
n expression
rand([
is an integer ƒ zero.
n
With no parameter, returns the next random number
between 0 and 1 in the sequence. When an
argument is positive, returns a random integer in the
interval [1, n ].
When an argument is negative, returns a random
integer in the interval [ë n ,ë 1].
randMat()
MATH/Probability menu
numRows
randMat(
Returns a matrix of integers between -9 and 9 of the
specified dimension.
Both arguments must simplify to integers.
randNorm()
MATH/Probability menu
randNorm( mean ,
Returns a decimal number from the specific normal
distribution. It could be any real number but will be
heavily concentrated in the interval [
+3ù
mean
randPoly()
MATH/Probability menu
var order
randPoly( ,
Returns a polynomial in
The coefficients are random integers in the range
ë 9 through 9. The leading coefficient will not be
zero.
must be 0–99.
order
RandSeed
MATH/Probability menu
number
RandSeed
If = 0, sets the seeds to the factory defaults
number
for the random-number generator. If
used to generate two seeds, which are stored in
system variables
834
) ⇒
yExpression expression
,
list
) ⇒
matrix
-coordinate of the
r
) ⇒
numColumns matrix
,
) ⇒
sd expression
mean
].
sd
) ⇒
expression
of the specified order.
var
number
and .
seed1 seed2
In Radian angle mode:
R4Pr(3,2) ¸
R4Pr(x,y) ¸
R4Pr([3,-4,2],[0,pà4,1.5]) ¸
RandSeed 1147 ¸
(Sets the random-number seed.)
rand() ¸
rand(6) ¸
rand(ë 100) ¸
RandSeed 1147 ¸
randMat(3,3) ¸
Note: The values in this matrix will change each
time you press ¸.
RandSeed 1147 ¸
randNorm(0,1) ¸
randNorm(3,4.5) ¸
-3ù ,
sd
RandSeed 1147 ¸
randPoly(x,5) ¸
RandSeed 1147 ¸
rand() ¸
ƒ 0, it is
Appendix A: Functions and Instructions
.158

8 ë 3

ë 2 3 ë 6

4 ë 6
0
.492
ì3.543
ë 2ø x ì 6ø x
5 +3ø x 4 3 +4ø xì 6
.158
Done
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5
ë 49
Done

6


Done
...
...
Done
Done
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