R4444 p q qq q (), R4444 pr(), 4444 rad – Texas Instruments TITANIUM TI-89 User Manual
Page 861: Rand(), Appendix a: functions and instructions 861

Appendix A: Functions and Instructions
861
R
4444Pq
q()
MATH/Angle menu
R
4444Pq
q (
xExpression
,
yExpression
)
⇒
⇒
⇒
⇒
expression
R
4444Pq
q (
xList
,
yList
)
⇒
⇒
⇒
⇒
list
R
4444Pq
q (
xMatrix
,
yMatrix
)
⇒
⇒
⇒
⇒
matrix
Returns the equivalent
q-coordinate of the
(
x,y
) pair arguments.
Note: The result is returned as a degree, gradian
or radian angle, according to the current angle
mode setting.
In Degree angle mode:
R8Pq(x,y)
¸
In Gradian angle mode:
R8Pq(x,y)
¸
In Radian angle mode:
R4Pq(3,2)
¸
R4Pq([3,-4,2],[0,pà4,1.5])
¸
R
4444Pr()
MATH/Angle menu
R
4444Pr (
xExpression
,
yExpression
)
⇒
⇒
⇒
⇒
expression
R
4444Pr (
xList
,
yList
)
⇒
⇒
⇒
⇒
list
R
4444Pr (
xMatrix
,
yMatrix
)
⇒
⇒
⇒
⇒
matrix
Returns the equivalent
r
-coordinate of the
(
x,y
) pair arguments.
In Radian angle mode:
R4Pr(3,2)
¸
R4Pr(x,y)
¸
R4Pr([3,-4,2],[0,pà4,1.5])
¸
4444Rad
CATALOG/MATH/Angle menu
4444
Rad
expression
Converts an expression to radian angle measure.
In Degree angle mode:
1.5 4Rad ¸ .02618
R
In Gradian angle mode:
1.5 4Rad ¸ .023562
R
rand()
MATH/Probability menu
rand([
n
])
⇒
⇒
⇒
⇒
expression
n
is an integer
ƒ zero.
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].
RandSeed 1147
¸
Done
rand()
¸
.158
...
rand(6)
¸
5
rand(л 100)
¸
л
49
(Sets the random-number)