Q231
Let f ( x, y ) = a x^2 + b y^2 xy, where a and b are constants. If f x = f y at x = 1 and y = 2, then the relation between a and b is
Let where a and b are constants. If at x = 1 and y = 2, then the relation between a and b is
A.
B.
C.
a = 2b
D.
a = 4b
AnswerAnswer: Option D
Solution
Answer: Option D
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