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The differential equation is $\"\"$ and $\"\"$ .

Consider $\"\"$ .

Integrate on each side.

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Solution of the differential equation is $\"\"$ .

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Initial condition is $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

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Substitute $\"\"$ in the solution of differential equation.

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Particular solution of the differential equation is $\"\"$ .

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Particular solution of the differential equation is $\"\"$ .