Show 

                

sign

(function for equations)

 

Usage:

sign (x)

Definition:

(x > 0) ? 1 : (x < 0) ? -1 : 0

Required:

x is an unrestricted real

Returns 1 if x is positive, -1 if x is negative, and 0 if x is zero.

See also rect, clip, and abs.

Home > Special Math Functions_sign