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Let f(x,y)=2x+2y+1x2+y2+1f ( x , y ) = \frac { 2 x + 2 y + 1 } { x ^ { 2 } + y ^ { 2 } + 1 }

Question 34

Multiple Choice

Let f(x,y) =2x+2y+1x2+y2+1f ( x , y ) = \frac { 2 x + 2 y + 1 } { x ^ { 2 } + y ^ { 2 } + 1 } . Then f has a relative maximum at


A) (12,14) \left( \frac { 1 } { 2 } , \frac { 1 } { 4 } \right)
B) (12,12) \left( - \frac { 1 } { 2 } , - \frac { 1 } { 2 } \right)
C) (12,12) \left( \frac { 1 } { 2 } , - \frac { 1 } { 2 } \right)
D) (12,12) \left( - \frac { 1 } { 2 } , \frac { 1 } { 2 } \right)
E) (12,12) \left( \frac { 1 } { 2 } , \frac { 1 } { 2 } \right)

Correct Answer:

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