Absolute value

Absolute Value

The absolute value of a real number x (symbolized |x|) is the unsigned portion of x . The absolute value of x is always greater than or equal to 0.

The absolute value of a complex number z (also symbolized as |z|) is the complex modulus of z. If Failed to parse (unknown function "\x"): {\displaystyle z = \x+i*y}
 where x and y are real and $x:f(x)=0\,$ then the complex modulas of z is ${\sqrt {2}}$