Fixed point
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/20/Fixed_point_example.svg/220px-Fixed_point_example.svg.png)
A value x is a fixed point of a function f if and only if f(x) = x.
Examples[change | change source]
1 is a fixed point of because . Some functions do not have fixed points. For example does not have one because is never equal to x.
A value x is a fixed point of a function f if and only if f(x) = x.
1 is a fixed point of because
. Some functions do not have fixed points. For example
does not have one because
is never equal to x.