engineering recuitment BEL Probationary Engineers Mock Test 2025 Engineering Mathematics Differential Equations Non Exact Differential Equations
Which among the following are the integrating factors of the differential equation 3xy + y2 + (x2 + xy)\(\frac{d y}{d x}\) = 0
(A). x
(B). x2
(C). 3x
(D). \(\frac{1}{x y(2 x+y)}\)
Choose the correct answer from the options given below:
1
(A) and (C) only.
2
(A), (C) and (D) only.
3
(A), (B), (C) and (D).
4
(B), (C) and (D) only.