Find values of x and y such that both fx(x,y) = 0 and fy(x,y) = 0.f(x,y) = x2 + xy + y2 + 2x + 3y
A. x = 
, y = 
B. x = 
, y = 
C. x = - 
, y = - 
D. x = - 
, y = - 
Answer: C
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What will be an ideal response?
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