12 Mathematics Differentials Equations - Set No : 3 Question No :8
Question No : 8
Order of
the differential equation of the family of all concentric circles centred at  is |
| a) | 1 | b) | 2 |
| c) | 3 | d) | 4 |
Answer No : 8
(a) , here only one arbitrary constant  . So, order of differential equation
= 1. |