Problem + Hard 22-1    Source:    Exercise 7.8 - page 266    Book: Análise de Circuitos em Engenharia - J. David Irwin - 4ª edição - Ed. Pearson.

In the circuit shown in the figure below, the switch S has been open for a long time. At t = 0 the switch is closed. Determine the answer of V_o (t).

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