Texas Instruments TI-89, TI-92

492 Appendix A: Functions and Instructions

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 492 of 132

rotate(list1[,#ofRotations]) ⇒ list

Returns a copy of list1 rotated right or left by

#of Rotations elements. Does not alter list1.

If #of Rotations is positive, the rotation is to

the left. If #of Rotations is negative, the

rotation is to the right. The default is ë1

(rotate right one element).

In Dec base mode:

rotate({1,2,3,4}) ¸

{4 1 2 3}

rotate({1,2,3,4},ë2) ¸

{3 4 1 2}

rotate({1,2,3,4},1) ¸

{2 3 4 1}

rotate(string1[,#ofRotations]) ⇒ string

Returns a copy of string1 rotated right or left

by #of Rotations characters. Does not alter

string1.

If #of Rotations is positive, the rotation is to

the left. If #of Rotations is negative, the

rotation is to the right. The default is ë1

(rotate right one character).

rotate("abcd") ¸"dabc"

rotate("abcd",ë2) ¸"cdab"

rotate("abcd",1) ¸"bcda"

round() MATH/Number menu

round(expression1[, digits]) ⇒ expression

Returns the argument rounded to the

specified number of digits after the decimal

point.

digits must be an integer in the range 0–12. If

digits is not included, returns the argument

rounded to 12 significant digits.

Note: Display digits mode may affect how

this is displayed.

round(1.234567,3) ¸1.235

round(list1[, digits]) ⇒ list

Returns a list of the elements rounded to the

specified number of digits.

round({p,‡(2),ln(2)},4) ¸

{3.1416 1.4142 .6931}

round(matrix1[, digits]) ⇒ matrix

Returns a matrix of the elements rounded to

the specified number of digits.

round([ln(5),ln(3);p,e^(1)],1)

[1.6 1.1

3.1 2.7]

rowAdd() MATH/Matrix/Row ops menu

rowAdd(matrix1, rIndex1, rIndex2) ⇒ matrix

Returns a copy of matrix1 with row rIndex2

replaced by the sum of rows rIndex1 and

rIndex2.

rowAdd([3,4;ë3,ë2],1,2) ¸

[]

3 4

0 2

rowAdd([a,b;c,d],1,2) ¸

a+c

b+d]

rowDim() MATH/Matrix/Dimensions menu

rowDim(matrix) ⇒ expression

Returns the number of rows in matrix.

Note: See also colDim().

[1,2;3,4;5,6]!M1 ¸





1 2

3 4

5 6

row

(