Question: Level curves are shown for a function f. Determine whether the following partial derivatives are positive or negative at the point P. (a) fx (b)

Level curves are shown for a function f. Determine whether the following partial derivatives are positive or negative at the point P.

(a) fx 

(b) fy 

(c) fxx 

(d) fxy 

(e) fyyУА 10 8 6 х

10 8 6

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