526 Appendix A: Functions and Instructions
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 526 of 132
+ (add) «key
expression1 + expression2 ⇒ expression
Returns the sum of expression1 and
expression2.
56 ¸56
ans
(1)
+4
¸
60
ans
(1)
+4
¸
64
ans
(1)
+4
¸
68
ans
(1)
+4
¸
72
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,ë5,ëp} ¸
{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.
6ì2 ¸4
pìpà6 ¸5øp
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,pà2}ì{10,5,pà2} ¸
{12 pì5 0}
[3,4]ì[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.
15ì{10,15,20} ¸{5 0 -5}
{10,15,20}ì15 ¸{-5 0 5}