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Solve the Problem f(x,y)=2x2+10xy+9y2f ( x , y ) = 2 x ^ { 2 } + 10 x y + 9 y ^ { 2 }

Question 19

Multiple Choice

Solve the problem.
-Maximize f(x,y) =2x2+10xy+9y2f ( x , y ) = 2 x ^ { 2 } + 10 x y + 9 y ^ { 2 } subject to x+y=1x + y = 1 and x+4y=9x + 4 y = 9 .


A) 2269\frac { 226 } { 9 }
B) 583- \frac { 58 } { 3 }
C) 269\frac { 26 } { 9 }
D) 1423\frac { 142 } { 3 }

Correct Answer:

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