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Let h(x,y)=x3+y3+9xy+6h ( x , y ) = x ^ { 3 } + y ^ { 3 } + 9 x y + 6

Question 72

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Let h(x,y)=x3+y3+9xy+6h ( x , y ) = x ^ { 3 } + y ^ { 3 } + 9 x y + 6 Determine all local maxima, minima, and saddle points.Are the local extrema also global extrema?

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(0, 0)is a saddle po...

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