Question: In problem the indicated function y 1 (x) is a solution of the given differential equation. Use reduction of order or formula (5), as instructed,

In problem the indicated function y₁(x) is a solution of the given differential equation. Use reduction of order or formula (5), as instructed, to find a second solution y₂(x).

y'' + 9y = 0; y₁ + sin 3x

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Define y ux sin 3x so y 3u cos 3x u sin 3x y u sin 3x 6u cos 3x 9u sin 3x an... View full answer

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