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Continue to Chat2.32 The inverting circuit with the T network in the feedback is redrawn in Fig. P2.32 in a way that emphasizes the observation that R2 and R3 in effect are in parallel (because the ideal op amp forces a virtual ground at the inverting input terminal). Use this observation to derive an expression for the gain (vO/vI) by first finding (vX/vI) and (vO/vX). For the latter use the voltage-divider rule applied to R4 and (R2 || R3). https://electricalstudent.com/2-32-the-inverting-circuit-with-the-t-network-in-the-feedback-is-redrawn-in-fig-p2-32-in-a-way-that-emphasizes-the-observation-that-r2-and-r3-in-effect-are-in-parallel-because-the-ideal-op-amp-force/