Sonika Jain Asked a Question
September 19, 2020 12:53 pmpts 30 pts
xy 21. Let f(x, y)= x *y? if +y 0 0 if x= y = 0 Then (A) fx, y) is not continuous at (0, 0) (B) f, and f, exist and continuous at (0, 0) (C) f is differentiable at (0, 0) (D) The directional derivative of f at (0, 0) along (1, 2) exist.
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  • Priyadarshan Choursiya thankyou
    see attachment for direction derivative https://youtu.be/2FlWyTyLxTo all are incorrect
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    Sonika Jain
    part of directiona derivative is not clear what is the exact value of DD . you left it somewhere . and one doubt fx is partial derivative of f with respect to f in case of two var...
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  • Deepak singh
    option d is correct, if any doubt then ask
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  • Deepak singh thankyou
    see attached solution
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