Find the directional derivative of f (x, y) = 5−x2−2y2 at P (-1, -1).(adsbygoogle = window.adsbygoogle || []).push({});

anybody pls help as i don't know how to find the direction from this ques so , i can't find the directional derivative

pls help

thanx

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# Homework Help: Finding the Directional derivative

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