#22. Let 2,4 x y x+6y8 f(x,y)= Show that af ах if (x,y) (0,0) if (x,y) = (0,0) (0,0) and of бу (0,0) exist b. Show that f is not differentiable at co,os by showing that f is not continous at (0,0).

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A: fx,y,z=z2x+y3 P1,1,2v→=15i+25j We know directional derivative Dv→fP=∇fP.v→v→

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A: The given function is: f(x,y)=x2y+2x23x-y

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A: Thanks for the question :)And your upvote will be really appreciable ;)

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