Texas Instruments TITANIUM TI-89 User Manual
Page 605
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Programming
605
Note:
From the keyboard, you can type:
>= for |
<= for {
/= for ƒ
(To get the / character, press
e.)
Boolean Tests
Boolean Tests
Boolean Tests
Boolean Tests
Boolean operators let you combine the results of two separate tests.
The Not Function
The Not Function
The Not Function
The Not Function
The
not
function changes the result of a test from true to false and vice versa. For
example:
Note:
If you use
not
from the Home screen, it is shown as
~
in the history area. For
example,
not x>2
is shown as
~(x>2)
.
Operator
True if:
Example
and
Both tests are true
a>0 and a
{
10
or
At least one test is true
a
{
0 or b+c>10
xor
One test is true and the
other is false
a+6<b+1 xor c<d
not
x>2
is true if
is false if
x
{
2
x>2
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