Texas Instruments TITANIUM TI-89 - Manual (Page 793)

Appendix A: Functions and Instructions 793
ClrGraph CATALOG
ClrGraph
Clears any functions or expressions that were
graphed with the
Graph command or were
created with the Table command. (See Graph or
Table .)
Any previously selected Y= functions will be
graphed the next time that the graph is displayed.
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 ƒ and 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 ƒ and 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,л 2,3;4,5,л 6]! mat ¸
[
1 л 2 3
4 5 л 6
]
colNorm(mat) ¸ 9
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)
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