Absolute Value

The positive value for a real number, disregarding the sign.

Examples:

|3|=3

|-4|=4

|0|=0.

The absolute value of a negative number is obtained by multiplying the number by -1

If a number r is denoted |r|

|r|=r for r≥0

|r|=-r for negative r

|r| is the distance from number r to the origin. In this form, the definition applies to complex numbers that are identified with points in the plane.

Previous PageNext Page

Subjects: Mathematics