Discussion
The order of a differential equation is the order of
Answer: A
Order counts derivatives; degree counts powers. So \( (y'')^{3} + y = 0 \) is of order two and degree three, while \( y''' + (y')^{5} = 0 \) is of order three and degree one, the degree being read from the *highest* derivative present. Confusing the two is the commonest slip in classifying an equation
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