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Question

The order of the differential equation d2ydt2 + (dydt)3 + y4=e−t is

A
1
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B
2
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C
3
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D
4
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Solution

The correct option is B 2
Given differential equation
d2ydt2 + (dydt)3 + y4=et

Highest order derivative is d2ydt2

Hence order = 2

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