Texas Instruments TITANIUM TI-89 - Manual (Page 604)

Programming 604
Entering a Test Operator Entering a Test Operator Entering a Test Operator Entering a Test Operator
• Type the operator directly from the keyboard.
– or –
Relational Tests Relational Tests Relational Tests Relational Tests
Relational operators let you define a conditional test that compares two values. The
values can be numbers, expressions, lists, or matrices (but they must match in type and
dimension).
• Press 2 I and select
8:Test . Then
select the operator from the menu.
– or –
• Display the built-in functions. Press:
½The test operators are listed near
the bottom of the
„ Built-in menu.
Operator True if: Example
> Greater than a>8
< Less than a<0
| Greater than or equal to a+b | 100
{ Less than or equal to a+6 { b+1
= Equal list1=list2
ƒ Not equal to mat1 ƒ mat2