Absolute Value
Definition:
The absolute value of a real number x is defined as
|x| = ±x
Real numbers
a
and
b
show the following absolute value rules:
|
a
| = |-
a
|
|
ab
| = |
a
| X |
b
|
-|
a
|
<
a
<
|
a
|
ab
<
|
a
| |
b
|
|
a+b
|
2
= (
a+b
)
2
