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Question

The order and degree of the differential equation (1+3dydx)23=4d3ydx3 are
  1. 3, 1
  2. 3,3
  3. 1,2
  4. 1,23


Solution

The correct option is B 3,3
To check, order and degree, the given differential equation should be free from radicals, hence taking cube on both sides, (1+3.dydx)2=(4.d3ydx3)3
Clearly, order = 3, degree = 3.

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