Texas Instruments PLUS TI-89 - Manual (Page 547)

530 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 530 of 132
≤
¹ µ key
expression1 ≤ expression2 ⇒ Boolean expression
list1
≤
list2
⇒
Boolean list
matrix1 ≤ matrix2 ⇒ Boolean matrix
Returns true if expression1 is determined to be
less than or equal to expression2 .
Returns false if expression1 is determined to
be greater than expression2 .
Anything else returns a simplified form of the
equation.
For lists and matrices, returns comparisons
element by element.
See "=" (equal) example.
> 2 Ã key
expression1 > expression2 ⇒ Boolean expression
list1 > list2
⇒
Boolean list
matrix1 > matrix2 ⇒ Boolean matrix
Returns true if expression1 is determined to be
greater than expression2 .
Returns false if expression1 is determined to
be less than or equal to expression2 .
Anything else returns a simplified form of the
equation.
For lists and matrices, returns comparisons
element by element.
See "=" (equal) example.
≥
¹ ¶ key
expression1 ≥ expression2 ⇒ Boolean expression
list1 ≥ list2 ⇒ Boolean list
matrix1 ≥ matrix2 ⇒ Boolean matrix
Returns true if expression1 is determined to be
greater than or equal to expression2 .
Returns false if expression1 is determined to
be less than expression2 .
Anything else returns a simplified form of the
equation.
For lists and matrices, returns comparisons
element by element.
See "=" (equal) example.
.+ (dot add) ¶ « keys
matrix1 .+ matrix2
⇒
matrix
expression .+ matrix1 ⇒ matrix
matrix1 .+ matrix2 returns a matrix that is the
sum of each pair of corresponding elements
in
matrix1 and matrix2 .
expression .+ matrix1 returns a matrix that is
the sum of expression and each element in
matrix1.
[a,2;b,3].+[c,4;5,d] ¸
x.+[c,4;5,d] ¸