Let yi = e* and y2 = homogeneous DE. Then, be solutions for a is also a solution to the DE. Select one: O y = 4e-3x + 7e2x O None of these. O y = 4e-3x + 7e-2x O y = 4e3x + 7e2x O y = 4e3x + 7e-2x The functions y = e³* and y2 = e-3* are both solutions for the homogeneous DE: y" – 9y = 0. Then, the general solution of nonhomogeneous DE y" – 9y = -18x – 36 is Select one: O y = cjex + cze-3x – 2x – 4 O y = cje3x + cze¬3* – 2x +4 O None of these. O y = cjex + cze¬3x + 2x + 4 O y = cje* + cze¬3* + 2x – 4

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