Maxima , minima and point of inflection

[@leftrightfilms5697]

You make very important contributions for students of economics. Thank you.

[@samuelmovela7299]

I love you and your work Sir. Stay blessed.

[@KhanBndi]

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[@MurtalaYau-fy5pf]

Well understood

[@ECONMATHS]

Thanks

[@koshlyanayak3432]

Very helpful explanation
Thanks sir😊

[@Ndumiso-pd5ch]

Thank you sir😊

[@abhishektanwar7539]

according to me what i have studied when 2nd derivative is -ve it is maxima and vice versa