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The Differential equation is $\"\"$ .

The function is $\"\"$ .

Differentiate on each side with respect to $\"\"$ .

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$\"\"$ (1)

Differentiate on each side with respect to $\"\"$ .

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$\"\"$ (2)

Substitute the results (1), (2) and $\"\"$ in differential equation.

$\"\"$ .

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Consider $\"\"$ .

Compare $\"\"$ coefficients on each side.

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Compare $\"\"$ coefficients on each side.

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Compare constants on each side.

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