The differential equation of all parabola whose axis of symmetry is parallel to x-axis is of order
Answer & explanation
Correct answer: option 2
The correct answer is option (2) : 3
The general equation of all parabola whose axis of symmetry is parallel to x axis is
$x= ay^2 + by + c, $ where a, b , c are arbitrary constants.
As there are there arbitrary constants.
So the required differential equation is of order 3.