Question: (a) Write the general form of a second-order nonhomogeneous linear differential equation with constant coefficients. (b) What is the complementary equation? How does it help

(a) Write the general form of a second-order nonhomogeneous linear differential equation with constant coefficients.
(b) What is the complementary equation? How does it help solve the original differential equation?
(c) Explain how the method of undetermined coefficients works.
(d) Explain how the method of variation of parameters works.

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