$\"\"$

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

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$\"\"$ .

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$\"\"$ .

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Apply integral on each side.

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$\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ . $\"\"$

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Consider $\"\"$ .

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Integral formula: $\"\"$ .

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Here $\"\"$ .

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$\"\"$

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$\"\"$ .

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Substitute results of $\"\"$ and $\"\"$ in $\"\"$ .

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$\"\"$ .

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$\"\"$

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$\"\"$ , where $\"\"$ . $\"\"$

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Find constant value.

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The condition $\"\"$ .

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$\"\"$

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Substitute $\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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

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$\"\"$

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The solution of differential equation is $\"\"$ . $\"\"$

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$\"\"$ .