Texas Instruments TI-89 Voyage 200, User Manual

Page: 902 / 1008

902 Appendix A: Functions and Instructions
ù
(multiply) p
key
expression1 ù expression2
⇒ ⇒ ⇒ ⇒
expression
Returns the product of
expression1
and
expression2
.
2
ù
3.45
¸
6.9
x
ù
y
ù
x
¸
x
2 ø
y
list1 ù 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
à
a,3
à
2}
ù
{a
ñ
,b
à
3}
¸
{2
ø
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
.
p ù
{4,5,6}
¸
{4
ø p
5
ø p
6
ø 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
]
l ù
identity(3)
¸






l
0 0
0
l
0
0 0
l
à
à à
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}
expression à list1
⇒
list
list1 à expression
⇒
list
Returns a list containing the quotients of
expression
divided by
list1
or
list1
divided by
expression.
a/{3,a,
‡
(a)}
¸




a
3 1
‡
a
{a,b,c}/(a
ù
b
ù
c)
¸
{
1
b
ø
c
1
a
ø
c
1
a
ø
b
}
matrix1 à expression
⇒
matrix
Returns a matrix containing the quotients of
matrix1
à
expression.
Note: Use
. /
(dot divide) to divide an expression
by each element.
[a,b,c]/(a
ù
b
ù
c)
¸
[
1
b
ø
c
1
a
ø
c
1
a
ø
b
]