2. For each ODE below, do the following: i. Give one value of k (from the given possibilities) for which the ODE exhibits resonance. ii. Give one value of k (from the given possibilities) for which the ODE does not exhibit resonance, and find a particular solution in that case. (a) x" + kx = cos(2t), with these possible values of k for you to choose from: 0, 1, 2, 3, or 4.

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