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✨ Best Answer ✨

f_xy(0,0)=lim[k→0]{f_x(0,k)-f_x(0,0)}/k
=lim[k→0](-k-0)/k
=-1
f_yx(0,0)=lim[h→0]{f_y(h,0)-f_y(0,0)}/k
=lim[h→0](h-0)/h
=1

あああああ

遅くなりすみません。
ありがとうございます🙇‍♀️

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