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RL Circuits: Growth and decay of current in inductor

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See attached circuit. Note current source is 2A,Resistors are 2 Ohms, Inductor 2H.
Assume that the switch has been open for a long time and that it closes at t=0 sec. The switch remains closed thereafter. How do I solve for Vx(t) and Ix(t)?

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Typical question with resistances in series and parallel with inductor.

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