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The general solution of the differential equation (y 2 – x 3 )dx – xydy = 0 (x ≠ 0) is : (where c is a constant of integration)

1. y 2 + 2x 2 + cx 3 = 0
2. y 2 + 2x 3 + cx 2 = 0
3. y 2 – 2x + cx 3 = 0
4. y 2 – 2x 3 + cx 2 = 0

Correct answer: y 2 + 2x 3 + cx 2 = 0

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