Convexity and Concavity of a function (Lesson 2)

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This video teaches us what a convex set is and how to find out the convexity and concavity of a function using derivatives and the HESSIAN matrix.
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don't we need lagrange multiplier? is the positivity of determinants enough for concave-convex test?

arda
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Thankyou for the clear explanation. It helps me a lot

marcellacella
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Will the hessian matrix sample be given in the question?

omidirantoheeb
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Please can you recommend a book that talk about this subject in depth

playerplayer
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Do you take online classes I think I need help

azaxongo
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what if you get all diagnoal negative and all other values are zero

ArmanAli-wwml
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wish my teacher broke it down like you!

anthonycarmichael
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great work; stephen donkor-boadu recommends you

festusattah
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