Texas Instruments PLUS TI-89 - Manual (Page 544)

Appendix A: Functions and Instructions 527
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 527 of 132
expression - matrix1 ⇒ matrix
matrix1 - expression
⇒
matrix
expression ì matrix1 returns a matrix of
expression times the identity matrix minus
matrix1 . matrix1 must be square.
matrix1 ì expression returns a matrix of
expression times the identity matrix
subtracted from matrix1 . matrix1 must be
square.
Note: Use . . (dot minus) to subtract an
expression from each element.
20м [1,2;3,4] ¸
[
19 л 2
л 3 16
]
щ (multiply) p key
expression1 ù expression2
⇒
expression
Returns the product of expression1 and
expression2 .
2ù 3.45 ¸ 6.9
xù yù x ¸ x 2 ø y
list1ù list2 ⇒ list
Returns a list containing the products of the
corresponding elements in
list1 and list2 .
Dimensions of the lists must be equal.
{1.0,2,3}ù {4,5,6} ¸ {4. 10 18}
{2 аa,3а2}щ {aс,bа3} ¸{2ш a
b
2}
matrix1 ù matrix2 ⇒ matrix
Returns the matrix product of matrix1 and
matrix2 .
The number of rows in matrix1 must equal
the number of columns in matrix2 .
[1,2,3;4,5,6]ù [a,d;b,e;c,f]
¸
expression ù list1
⇒
list
list1 ù expression ⇒ list
Returns a list containing the products of
expression and each element in list1 .
pщ {4,5,6} ¸ {4ш p 5ø p 6ø p}
expression ù matrix1 ⇒ matrix
matrix1 ù expression
⇒
matrix
Returns a matrix containing the products of
expression and each element in matrix1 .
Note: Use . ù (dot multiply) to multiply an
expression by each element.
[1,2;3,4]ù.01 ¸ [
.01 .02
.03 .04
]
lù identity(3) ¸



 l 0 0
0
l 0
0 0 l
à
(divide) e key
expression1 à expression2 ⇒ expression
Returns the quotient of expression1 divided by
expression2 .
2/3.45 ¸ .57971
x^3/x ¸ x 2
list1 à list2 ⇒ list
Returns a list containing the quotients of list1
divided by list2.
Dimensions of the lists must be equal.
{1.0,2,3}/{4,5,6} ¸
{.25 2/5 1/2}