What is the order of the differential equation whose solution is y=a x+b x+ce^ -x +d, where a, b, c and d are arbitrary constants?

NDA 2018 Mathematics question

What is the order of the differential equation whose solution is , where a, b, c and d are arbitrary constants?

Answer: (D)

The solution contains four independent arbitrary constants (, , and 1 are linearly independent), and the

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Question ID VK-029020