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Question: Answered & Verified by Expert
Order of the differential equation of the family of all concentric circles centered at $(h, k)$ is
MathematicsDifferential EquationsAP EAMCETAP EAMCET 2002
Options:
  • A $1$
  • B $2$
  • C $3$
  • D $4$
Solution:
1981 Upvotes Verified Answer
The correct answer is: $1$
The equation of the family of all concentric circles centred at $(h, k)$ is
$$
(x-h)^2+(y-k)^2=r^2
$$
$h$ and $k$ are given so, the above equation has only one parameter.
$\therefore$ Order of the differential equation $=1$

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