Difference between revisions of "Critical point"

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A '''critical point''' of a function <math>\displaystyle f(x)</math> is a point <math>\displaystyle (x,f(x))</math> for which <math>\displaystyle f'(x)</math> is not defined, or is equal to zero.
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A '''critical point''' of a function <math>\displaystyle f(x)</math> is a point <math>\displaystyle (k,f(k))</math> for which <math>\displaystyle f'(k)</math> is not defined, or is equal to zero.
  
 
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Revision as of 16:46, 1 September 2006

A critical point of a function $\displaystyle f(x)$ is a point $\displaystyle (k,f(k))$ for which $\displaystyle f'(k)$ is not defined, or is equal to zero.

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See also