Difference between revisions of "Absolute value"

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The absolute value of a real number x (symbolized |x|) is the unsigned portion of x<ref>http://mathworld.wolfram.com/AbsoluteValue.html</ref> . The absolute value of x is always greater than or equal to 0.
 
The absolute value of a real number x (symbolized |x|) is the unsigned portion of x<ref>http://mathworld.wolfram.com/AbsoluteValue.html</ref> . 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 <math>z = \x+i*y</math> where x and y are real and <math>x  :  f(x) = 0\,</math> then the complex modulas of z is <math>\sqrt{2}</math>
+
  The absolute value of a complex number z (also symbolized as |z|) is the complex modulus of z. If z = x+i*y where x and y are real and i=<math>\sqrt{-1}</math> then the complex modulas of z is <math>\sqrt{-1}</math>
  
 
==Notes and references==
 
==Notes and references==

Revision as of 06:13, March 17, 2007

Absolute Value

The absolute value of a real number x (symbolized |x|) is the unsigned portion of x[1] . 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 z = x+i*y where x and y are real and i= then the complex modulas of z is 

Notes and references

  1. http://mathworld.wolfram.com/AbsoluteValue.html