Texas Instruments TI-89 Titanium Short User Manual page 277

≤
¹ µ
≤
expression1 expression2
⇒
≤
list1 list2
≤
matrix1 matrix2
Returns
less than or equal to
Returns
greater than
Anything else returns a simplified form of the
equation.
For lists and matrices, returns comparisons
element by element.
>
2 Ã
expression1 expression2
>
⇒
list1 list2
>
matrix1 matrix2
>
Returns
greater than
Returns
less than or equal to
Anything else returns a simplified form of the
equation.
For lists and matrices, returns comparisons
element by element.
≥
¹ ¶
≥
expression1 expression2
⇒
≥
list1 list2
≥
matrix1 matrix2
Returns
greater than or equal to
Returns
less than
Anything else returns a simplified form of the
equation.
For lists and matrices, returns comparisons
element by element.
!
@
(factorial) ¥ e
! ⇒
expression1
! ⇒
list1 list
! ⇒
matrix1
Returns the factorial of the argument.
For a list or matrix, returns a list or matrix of
factorials of the elements.
The TI-89 computes a numeric value for only non-
negative whole-number values.
Appendix A: Functions and Instructions
key
⇒
Boolean expression
Boolean list
⇒
Boolean matrix
if is determined to be
expression1
true
expression2
if is determined to be
expression1
false
expression2 .
key
⇒
Boolean expression
Boolean list
⇒
Boolean matrix
if is determined to be
expression1
true
.
expression2
if is determined to be
expression1
false
expression2
key
⇒
Boolean expression
Boolean list
⇒
Boolean matrix
if is determined to be
expression1
true
expression2
if is determined to be
expression1
false
.
expression2
H
key
expression
matrix
See "=" (equal) example.
.
See "=" (equal) example.
.
See "=" (equal) example.
.
2 W key
5! ¸
{5,4,3}! ¸
[1,2;3,4]! ¸
120
{120 24 6}
1 2
[ ]
6 24
271