Texas Instruments TI-89 Titanium Short User Manual page 232

R4Pq()
MATH/Angle menu
xExpression
R4Pq (
xList yList
R4Pq ( ,
xMatrix
R4Pq ( ,
Returns the equivalent q-coordinate of the
x,y
( ) pair arguments.
Note: The result is returned as either a degree or
radian angle, according to the current angle
mode.
R4Pr()
MATH/Angle menu
xExpression
R4Pr (
xList yList
R4Pr ( ,
xMatrix
R4Pr ( ,
Returns the equivalent
x,y
( ) pair arguments.
rand()
MATH/Probability menu
]) ⇒
n
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,
When an argument is negative, returns a random
integer in the interval [ë
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
mean
randNorm(
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
226
) ⇒
yExpression expression
,
) ⇒
list
) ⇒
yMatrix matrix
) ⇒
yExpression expression
,
) ⇒
list
) ⇒
yMatrix matrix
-coordinate of the
r
expression
n ].
n
,ë 1].
) ⇒
numColumns
,
) ⇒
sd expression
,
, +3ù ].
sd mean sd
In Degree angle mode:
R8Pq(x,y) ¸
In Radian angle mode:
R4Pq(3,2) ¸
R4Pq([3,-4,2],[0,pà4,1.5]) ¸
In Radian angle mode:
R4Pr(3,2) ¸
R4Pr(x,y) ¸
R4Pr([3,-4,2],[0,pà4,1.5]) ¸
RandSeed 1147 ¸
rand() ¸
rand(6) ¸
rand(ë 100) ¸
matrix 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) ¸
Appendix A: Functions and Instructions
(Sets the random-number seed.)
 8 ë 3

ë 2

0
Done
.158 ...
5
ë 49
Done

6

3 ë 6

4 ë 6
Done
...
.492
ì3.543 ...