4. Let f(x, y)=2x*y' . Find f,(x,y)

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A: We have to find .

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Q: 4. If /(r.y)=- , find f, and f,. V+y

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Q: fo Find mini

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Q: Dete‎rmine if f (x, y) = ={(xsi‎n3y)/(x‎2+y6), (x, ‎y) ≠ (0, ‎0) ={1, (x, y) = (0, 0) is‎…

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