Texas Instruments PLUS TI-89 - Manual (Page 504)

Appendix A: Functions and Instructions 487
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 487 of 132
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:
{л 2,л 1,0,1,2,3,4,5,6}! L1 ¸
{л 2 л 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 8Pq(x,y) ¸
In Radian angle mode:
R 4Pq(3,2) ¸
R 4Pq([3,-4,2],[0,pà4,1.5]) ¸
R 4 Pr() MATH/Angle menu
R 4 Pr ( xExpression , yExpression ) ⇒
expression
R 4 Pr ( xList , yList ) ⇒ list
R 4 Pr ( xMatrix , yMatrix ) ⇒
matrix
Returns the equivalent r -coordinate of the
(x,y) pair arguments.
In Radian angle mode:
R 4Pr(3,2) ¸
R 4Pr(x,y) ¸
R 4Pr([3,-4,2],[0,pа4,1.5]) ¸