The functions y1 = ex and y2 = e-3x solutions for the homogeneous DE: are both y" – 9y = 0. Then, the general solution of nonhomogeneous DE y" – 9y = -18x - 36 is Select one: O y = cje + cze-3x - 2x - 4 O y = cje3x + c2e-3x – 2x + 4 O None of these. O y = cjex + cze-3x + 2x+ 4 -3x O y = cje* + cze 3* + 2x - 4

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