Qns 1. For the differential equation,
F(X,Y)(dy / dx) + g (x,y) =0 to be exact,
(A) ∂f / ∂y = ∂f / ∂x
(B)∂f / ∂x = ∂g / ∂y
(C) f=g
(D) ∂ 2f / ∂x2 = ∂2g / ∂y2
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(A) ∂f / ∂y = ∂f / ∂x
(B)∂f / ∂x = ∂g / ∂y
(C) f=g
(D) ∂ 2f / ∂x2 = ∂2g / ∂y2
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