7. The equation of a surface is f(x,y) = 4xy + x? – y+9. Which is...

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Answer 1

Answer #1

#c42 - 41+=+ (ч, 2, 44) If(2)) = ing ty> 4 91 , v-+ (49) = 484 8, 16 - 127 2 16, 17 Tanget plane 2. Есч, 2) 4 -сч,2) (1-4) +

Answer 2

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