y2y+x
−y2y+x
−y2y−x
Correct answer is B
y2+xy=5
By implicit differentiation
=2ydydx+y+xdydx=0
=2ydydx+xdydx=−y
Factor out dydx
=dydx(2y+x)=−y
∴\frac{dy}{dx}=\frac{-y}{2y + x}
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