Texas Instruments TI-89, TI-92

Appendix A: Functions and Instructions 421

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 421 of 132

ClrHome CATALOG

ClrHome

Clears all items stored in the entry() and ans()

Home screen history area. Does not clear the

current entry line.

While viewing the Home screen, you can

clear the history area by pressing ƒand

selecting 8:Clear Home.

For functions such as solve() that return

arbitrary constants or integers (@1, @2, etc.),

ClrHome resets the suffix to 1.

ClrIO CATALOG

ClrIO

Clears the Program I/O screen.

ClrTable CATALOG

ClrTable

Clears all table values. Applies only to the

ASK setting on the Table Setup dialog box.

While viewing the Table screen in Ask mode,

you can clear the values by pressing ƒand

selecting 8:Clear Table.

colDim() MATH/Matrix/Dimensions menu

colDim(matrix) ⇒ expression

Returns the number of columns contained in

matrix.

Note: See also rowDim().

colDim([0,1,2;3,4,5]) ¸3

colNorm() MATH/Matrix/Norms menu

colNorm(matrix) ⇒ expression

Returns the maximum of the sums of the

absolute values of the elements in the

columns in matrix.

Note: Undefined matrix elements are not

allowed. See also rowNorm().

[1,ë2,3;4,5,ë6]!mat ¸

[

ë2 3

4 5 ë6]

Norm

(

mat

)

comDenom() MATH/Algebra menu

comDenom(expression1[,var]) ⇒ expression

comDenom(list1[,var]) ⇒ list

comDenom(matrix1[,var]) ⇒ matrix

comDenom(expression1) returns a reduced ratio

of a fully expanded numerator over a fully

expanded denominator.

comDenom((y^2+y)/(x+1)^2+y^2+y)