Avendor claims that the circuit shown in Figure 8–54 is a high-pass filter with a cutoff frequency of ωC =1=R1C and a pass-band gain of −R2=R1. Verify his claim by finding the phasor voltage ratio VO=VS and determining at what radian frequency the gain falls to 0.707 of the pass-band (maximum) value.

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1/joC R R w w + Vo + FIGURE 8-54