Texas Instruments TITANIUM TI-89 - Manual (Page 901)

Appendix A: Functions and Instructions 901
list1 + list2
⇒
list
matrix1 + matrix2 ⇒ matrix
Returns a list (or matrix) containing the sums of
corresponding elements in
list1 and list2 (or
matrix1 and matrix2 ).
Dimensions of the arguments must be equal.
{22,p,p/2}! L1 ¸ {22 p p/2}
{10,5,p/2}! L2 ¸ {10 5 p /2}
L1+L2 ¸ {32 p +5 p}
ans(1)+{p,л 5,л p} ¸
{p+32 p 0}
[a,b;c,d]+[1,0;0,1] ¸
[ ] a+1 b
c d+1
expression + list1 ⇒ list
list1 + expression
⇒
list
Returns a list containing the sums of expression
and each element in list1 .
15+{10,15,20} ¸ {25 30 35}
{10,15,20}+15 ¸ {25 30 35}
expression + matrix1 ⇒ matrix
matrix1 + expression ⇒ matrix
Returns a matrix with expression added to each
element on the diagonal of matrix1 . matrix1 must
be square.
Note: Use .+ (dot plus) to add an expression to
each element.
20+[1,2;3,4] ¸
[
21 2
3 24
]
ì
(subtract) | key
expression1 - expression2 ⇒ ⇒ ⇒ ⇒ expression
Returns expression1 minus expression2.
6ì 2 ¸ 4
pì pа 6 ¸
5ш p
6
list1 ---- list2 ⇒ list
matrix1 ---- matrix2 ⇒ matrix
Subtracts each element in list2 (or matrix2 ) from
the corresponding element in list1 (or matrix1 ),
and returns the results.
Dimensions of the arguments must be equal.
{22,p,pа2}м {10,5,pа2} ¸
{12 pм 5 0}
[3,4]м [1,2] ¸ [2 2]
expression ---- list1 ⇒ list
list1 ---- expression ⇒ list
Subtracts each list1 element from expression or
subtracts expression from each list1 element, and
returns a list of the results.
15м {10,15,20} ¸ {5 0 -5}
{10,15,20}м 15 ¸ {-5 0 5}
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
]