JEE Math Practice Question
The differential equation representing the family of ellipse having foci eith on the x-axis or on the $$y$$-axis, center at the origin and passing through the point (0, 3) is :
- A.xy y'' + x (y')2 $$-$$ y y' = 0
- B.x + y y'' = 0
- C.xy y'+ y2 $$-$$ 9 = 0
- D.xy y' $$-$$ y2 + 9 = 0
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