Use the results from Example 7–6 and find the current through R1 in Figure 7–15 for t ≥ 0.

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IR, (1) R ww + VAM(1) Vu(t) + R v(1) C Vol C2V02 VA = 100 V at=0 Vol 5 V C = 0.1 F C = 0.5 F R = 30 k V02 = 10 V R = 10 kQ FIGURE 7-15