Let f(x,y) = (ax² + by²)/(xy), where a and b are constants. If ∂f/∂x = ∂f/∂y…
GATE · 2018 · EC · Electronics and Communication Engineering
Let f(x,y) = (ax² + by²)/(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
- A.
a = b/4
- B.
a = b/2
- C.
a = 2b
- D.
a = 4b
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