Texas Instruments Titanium TI-89, User Manual

Page: 836 / 977

Appendix A: Functions and Instructions 833
Note:
list1
through
list4
must be a variable name or
c1–c99. (columns in the last data variable shown in
the Data/Matrix Editor).
list5
does not have to be a
variable name and cannot be c1–c99.
¸
Regeq(x)
"
y1(x)
¸
Done
NewPlot 1,1,L1,L2
¸
Done
¥ %
QuartReg
MATH/Statistics/Regressions menu
QuartReg list1 , list2
[
, [ list3 ] [ , list4 , list5 ]
]
Calculates the quartic polynomial regression and
updates the system statistics variables.
All the lists must have equal dimensions except for
list5
.
list1
represents xlist.
list2 represents ylist.
list3 represents frequency.
list4 represents category codes.
list5
represents category include list.
Note:
list1
through
list4
must be a variable name or
c1–c99 (columns in the last data variable shown in
the Data/Matrix Editor).
list5
does not have to be a
variable name and cannot be c1–c99.
In function graphing mode:
{ ë 2, ë 1,0,1,2,3,4,5,6} ! L1 ¸
{ ë 2 ë 1 0 ... }
{4,3,1,2,4,2,1,4,6}
!
L2
¸
{4 3 1 ... }
QuartReg L1,L2
¸
Done
ShowStat ¸
¸
Regeq(x)
"
y1(x)
¸
Done
NewPlot 1,1,L1,L2
¸
Done
¥ %
R
4
P
q
()
MATH/Angle menu
R
4
P
q
( xExpression , yExpression )
⇒
expression
R
4
P
q
( xList , yList )
⇒
list
R
4
P
q
( xMatrix , yMatrix )
⇒
matrix
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.
In Degree angle mode:
R 8 P q (x,y) ¸
In Radian angle mode:
R
4
P
q
(3,2)
¸
R
4
P
q
([3,-4,2],[0,
pà
4,1.5])
¸