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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Priyadarshan Choursiya
see attachment for direction derivative https://youtu.be/2FlWyTyLxTo all are incorrect
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 varable function . in case of two variable there is always partial der. not simple derivative ?????