What is the difference between local and global maxima ?

Question

owlfred · Answer

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anonymous · Answer

global maxima means there is nothing greater anywhere.  local maxima means there is nothing greater nearby.

anonymous · Answer

A global maxima is always a local maxima, a local maxima is sometimes a global maxima.

anonymous · Answer

thank you :)

anonymous · Answer

then you look at the boundaries

anonymous · Answer

or there could be no extremum

anonymous · Answer

is it possible to use higher order differntials for the same ?

anonymous · Answer

it's hard to get any information from higher order derivatives.  Do you have a specific problem?