Question

The method of variation of parameters applies to
A) First of linear differential equations
B) Non linear differential equations
C) Both linear andnon linear differential equations
D) Second order linear differential equations
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Answer 1

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￫ In a differential equation, when the variables and their derivatives are only multiplied by constants, then the equation is linear. The variables and their derivatives must always appear as a simple first power. Here are some examples. Similar rules apply to multiple variable problems.

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