Texas Instruments TI-89, TI-92

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:

{ë2,ë1,0,1,2,3,4,5,6}!L1 ¸

{ë2 ë1 0 ...}

{

4,3,

,2,4,2,

,4,6

}

!L2

{4 3 1 ...}

QuartReg L

,L2

Done

owStat

Regeq(x)"y1(x) ¸Done

NewP

,L2

Done

¥%

R4Pq() MATH/Angle menu

R4Pq (xExpression, yExpression) ⇒ expression

R4Pq (xList, yList) ⇒ list

R4Pq (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:

R8Pq(x,y) ¸

In Radian angle mode:

R4Pq(3,2) ¸

R4Pq([3,-4,2],[0,pà4,1.5]) ¸

R4Pr() MATH/Angle menu

R4Pr (xExpression, yExpression) ⇒ expression

R4Pr (xList, yList) ⇒ list

R4Pr (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]) ¸