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1. For t > 0 the voltage across an energy storage element is v (t) = 5 - 20 e-500t V and the current through the element is i (t) = 2000t + 16 e-500t mA. What are the element, the element value, and its initial condition?

2. The OP AMP integrator in given Figure has R = 33 kΩ, C=0.056μF, and vO(0) = 10 V. The input is vS(t)= 5 e-500t u(t) V. The OP AMP has a VCC =± 15 V. Find vO(t) for t > 0.

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