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Mathematics 7 Online
OpenStudy (diogop110):

In which case I can use Lagrange Multipliers? does this method always give values only maximum and minimum points?

OpenStudy (anonymous):

no, it can also give you a saddle point

OpenStudy (diogop110):

How can I recognize?

OpenStudy (anonymous):

second derivative test

OpenStudy (anonymous):

Or the Hessian matrix

OpenStudy (diogop110):

thank you @sourwing

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