Test (Relational) Operations - Texas Instruments TI-82 STATS Manual Book

TEST (Relational) Operations

TEST Menu
=, ƒ,
>, ‚,
<, 
Using Tests
To display the
TEST
This operator...
TEST LOGIC
1: =
2: ƒ
3: >
4: ‚
5: <
6: 
Relational operators compare valueA and valueB and return
the test is true or if the test is false. valueA and valueB can be
0
real numbers, expressions, or lists. For
valueB also can be matrices or complex numbers. If valueA and
valueB are matrices, both must have the same dimensions.
Relational operators are often used in programs to control
program flow and in graphing to control the graph of a function
over specific values.
valueA valueB
=
valueA valueB
>
valueA valueB
<
Relational operators are evaluated after mathematical functions
according to EOS rules (Chapter 1).
The expression
2+2=2+3
performs the addition first because of EOS rules, and then it
compares 4 to 5.
The expression
2+(2=2)+3
performs the relational test first because it is in parentheses,
and then it adds 2, 1, and 3.
menu, press y [
TEST
Returns 1 (true) if...
Equal
Not equal to
Greater than
Greater than or equal to
Less than
Less than or equal to
and
=
valueA valueB
ƒ
valueA valueB
‚
valueA valueB

returns . The TI-82 STATS
0
returns . The TI-82 STATS
6
Math, Angle, and Test Operations 2.25
].
if
1
only, valueA and
ƒ