Texas Instruments PLUS TI-89 - Manual (Page 548)

Appendix A: Functions and Instructions 531
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 531 of 132
. . (dot subt.) ¶ | keys
matrix1 .ì matrix2 ⇒ matrix
expression .ì matrix1
⇒
matrix
matrix1 .ì matrix2 returns a matrix that is the
difference between each pair of
corresponding elements in
matrix1 and
matrix2 .
expression .ì matrix1 returns a matrix that is
the difference of expression and each element
in matrix1.
[a,2;b,3].ì [c,4;d,5] ¸
x.ì [c,4;d,5] ¸
. ù (dot mult.) ¶ p keys
matrix1 .ù matrix2
⇒
matrix
expression .ù matrix1 ⇒ matrix
matrix1 . ù matrix2 returns a matrix that is the
product of each pair of corresponding
elements in
matrix1 and matrix2 .
expression . ù matrix1 returns a matrix
containing the products of expression and
each element in matrix1 .
[a,2;b,3].ù [c,4;5,d] ¸
x.ù [a,b;c,d] ¸
. / (dot divide) ¶ e keys
matrix1 . / matrix2 ⇒ matrix
expression . / matrix1 ⇒ matrix
matrix1 . / matrix2 returns a matrix that is the
quotient of each pair of corresponding
elements in
matrix1 and matrix2 .
expression . / matrix1 returns a matrix that is
the quotient of expression and each element in
matrix1.
[a,2;b,3]./[c,4;5,d] ¸
x./[c,4;5,d] ¸
.^ (dot power) ¶ Z keys
matrix1 . ^ matrix2 ⇒ matrix
expression . ^ matrix1
⇒
matrix
matrix1 . ^ matrix2 returns a matrix where
each element in matrix2 is the exponent for
the corresponding element in matrix1 .
expression . ^ matrix1 returns a matrix where
each element in matrix1 is the exponent for
expression .
[a,2;b,3].^[c,4;5,d] ¸
x.^[c,4;5,d] ¸
! (factorial) TI - 89: ¥ e key TI - 92 Plus: 2 W key
expression1 ! ⇒ expression
list1 ! ⇒
list
matrix1 ! ⇒ matrix
Returns the factorial of the argument.
For a list or matrix, returns a list or matrix of
factorials of the elements.
The TI -89 computes a numeric value for only
non-negative whole-number values.
5 ! ¸ 120
{5,4,3} ! ¸ {120 24 6}
[1,2;3,4] ! ¸ [
1 2
6 24
]