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Question

The order of the differential equation whose solution is y=acosx+bsinx+ce-x is


A

3

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B

2

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C

1

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D

None of these

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Solution

The correct option is A

3


Explanation for the correct option

Given equation is y=acosx+bsinx+ce-x

There are 3 arbitrary constants a,b and c

Therefore the order of the differential equation is 3

Hence, the correct option is A.


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