Write a differential equation that meets the given criteria: (a) A second-order differential equation that we could use a characteristic polynomial to solve. (b) A second-order differential equation that we would need the method of undetermined coefficients in order to solve. (c) A second-order differential equation for which neither a characteristic polynomial nor the method of undetermined coefficients would yield a solution. (d) Would the characteristic polynomial method work if applied to a first-degree homogeneous differential equation with constant coefficients? Explain why or why not.

Write a differential equation that meets the given criteria: (a) A second-order differential equation that we could use a characteristic polynomial to solve. (b) A second-order differential equation that we would need the method of undetermined coefficients in order to solve. (c) A second-order differential equation for which neither a characteristic polynomial nor the method of undetermined coefficients would yield a solution. (d) Would the characteristic polynomial method work if applied to a first-degree homogeneous differential equation with constant coefficients? Explain why or why not.

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Write a differential equation that meets the given criteria: (a) A second-order differential equation that we could use a characteristic polynomial to solve. (b) A second-order differential equation that we would need the method of undetermined coefficients in order to solve. (c) A second-order differential equation for which neither a characteristic polynomial nor the method of undetermined coefficients would yield a solution. (d) Would the characteristic polynomial method work if applied to a first-degree homogeneous differential equation with constant coefficients? Explain why or why not.

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