Texas Instruments Titanium TI-89, User Manual

Page: 887 / 977

884 Appendix A: Functions and Instructions
4
(convert) 2 p
key
expression_unit1
4
_ unit2
⇒
expression_unit2
Converts an expression from one unit to another.
The units must be in the same category.
The _ underscore character designates the units.
For a list of valid pre-defined units, refer to the
module about constants and measurement units.
You can press:
@
2
9
H
¥ À
to select units from a menu, or
you can type the unit names directly.
To get the _ underscore when typing units directly,
press:
@
¥ q
H
2 q
Note: The
4
conversion operator does not handle
temperature units. Use
tmpCnv()
and
@
tmpCnv()
instead.
3_m
4
_ft
¸
9.842…
ø
_ft
10^()
CATALOG
10^ (
expression1
)
⇒
expression
10^ (
list1
)
⇒
list
Returns 10 raised to the power of the argument.
For a list, returns 10 raised to the power of the
elements in
list1
.
10^(1.5)
¸
31.622
...
10^{0,
ë
2,2,a}
¸
{1
1
100
100 10a}
10^(
squareMatrix1
)
⇒
squareMatrix
Returns 10 raised to the power of
squareMatrix1
. This
is not the same as calculating 10 raised to the
power of each element. For information about the
calculation method, refer to
cos()
.
squareMatrix1 must be diagonalizable. The result
always contains floating-point numbers.
10^([1,5,3;4,2,1;6, L 2,1]) ¸




1.143…
E
7 8.171…
E
6 6.675…
E
6
9.956…
E
6 7.115…
E
6 5.813…
E
6
7.652…
E
6 5.469…
E
6 4.468…
E
6
x
ê
CATALOG (^ -1 )
expression1 x
ê
⇒
expression
list1 x
ê
⇒
list
Returns the reciprocal of the argument.
For a list, returns the reciprocals of the elements in
list1
.
3.1^
ë
1
¸
.322581
{a,4,
ë
.1,x
ì
2}^
ë
1
¸
{
1
a 1
4
ë 10.
1
x ì 2
}
squareMatrix1
x
ê
⇒
squareMatrix
Returns the inverse of
squareMatrix1
.
squareMatrix1 must be a non-singular square matrix.
[1,2;3,4]^
ë
1
¸
[1,2;a,4]^ ë 1 ¸