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Let f(x,y)=x3+y26x2+y1f ( x , y ) = x ^ { 3 } + y ^ { 2 } - 6 x ^ { 2 } + y - 1

Question 69

Multiple Choice

Let f(x,y) =x3+y26x2+y1f ( x , y ) = x ^ { 3 } + y ^ { 2 } - 6 x ^ { 2 } + y - 1 . Then f has a relative minimum at


A) (4,2) ( 4 , - 2 )
B) (4,12) \left( - 4 , \frac { 1 } { 2 } \right)
C) (4,12) \left( - 4 , - \frac { 1 } { 2 } \right)
D) (4,12) \left( 4 , \frac { 1 } { 2 } \right)
E) (4,12) \left( 4 , - \frac { 1 } { 2 } \right)

Correct Answer:

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