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Find the general solution to y + 3y - 9y' - 27y = 12e . (Hint: The auxiliary polynomial is (r - 3)(r + 3)2.
Find the general solution to y" + 3y" - 9y' - 27y = 12e . (Hint: The auxiliary polynomial is (r - 3)(r + 3)2. ) Find the general solution to y" - 3y" = 12 + 18r + 6er
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