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question 146

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 Use the definition of partial derivatives as limits to find fx(x,y) if f(x,y)=5x29xy+2y2\text { Use the definition of partial derivatives as limits to find } f _ { x } ( x , y ) \text { if } f ( x , y ) = 5 x ^ { 2 } - 9 x y + 2 y ^ { 2 } \text {. }


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