Texas Instruments TI-89 Calculator User Manual


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904 Appendix A: Functions and Instructions
.ù
(dot mult.)
¶pkeys
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)
¶ekeys
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)
¶Zkeys
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]
¸
ë
(negate)
·key and MATH/Base menu
ë
expression1
expression
ë
list1
list
ë
matrix1
matrix
Returns the negation of the argument.
For a list or matrix, returns all the elements
negated.
If
expression1
is a binary or hexadecimal integer,
the negation gives the two’s complement.
ë2.43 ¸ ë 2.43
ë {ë1,0.4,1.2í19} ¸
{1 ë.4 ë 1.2í19}
ë aùëb ¸ aø b
In Bin base mode:
0b100101 4dec ¸ 37
ë 0b100101 ¸
0b11111111111111111111111111011011
ans(1)
4dec ¸ ë37
Note: To type 4, press 2.
% (percent) CHAR/Punctuation menu
expression1
%
expression
list1
%
list
matrix1
%
matrix
Returns
argument
100
.
For a list or matrix, returns a list or matrix with
each element divided by 100.
13% ¥¸ .13
{1, 10, 100}%
¥¸
{.01 .1 1.}
Important: Zero, not the letter O.