Question: Show that the mixed partials are equal. (f., = f,x) xy yx 20) f(x, y) = xy+xy 21) f(x, y) = In(1+xy)


Show that the mixed partials are equal. (f., = f,x) xy yx

Show that the mixed partials are equal. (f., = f,x) xy yx 20) f(x, y) = xy+xy 21) f(x, y) = In(1+xy)

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