1. (D² + 4)y = 0 2. у" + бу' + 9y %3D 0 3. (D4 + 2D3 — 6D? — 22D + 65)у 3D 0 4. у"" + 8y %3D0 5. y(aV) + 4y" + 4y = 0 6. у" + 5y' + бу %3D 2х + 3 7. у" — бу' + 9у 3 езх 8. (D2 + 2D — 5)у %3D cos(3x)...

Extracted text: 1. (D² + 4)y = 0 2. у" + бу' + 9y %3D 0 3. (D4 + 2D3 — 6D? — 22D + 65)у 3D 0 4. у"" + 8y %3D0 5. y(aV) + 4y" + 4y = 0 6. у" + 5y' + бу %3D 2х + 3 7. у" — бу' + 9у 3 езх 8. (D2 + 2D — 5)у %3D cos(3x) 9. (D2 + 1)у %3D sec3 x 10. y" — хInx