What is Fixed point?
[[File:Fixed point example.svg|thumb|A graph of a function with three fixed points]] A value ''x'' is a '''fixed point''' of a [[function (mathematics)|function]] ''f'' [[if and only if]] ''f''(''x'') = ''x''. == Examples == 1 is a fixed point of <math>x^2</math> because <math>1^2 = 1</math>. Some functions do not have fixed points. For example <math>x + 1</math> does not have one because <math>x + 1</math> is never equal to ''x''. {{math-stub}} [[Category:Mathematics]] [[Category:Systems theory]] [[Category:Recursion]]