The subsequent problems deal with the circuit below where the op amps are LM741's powered by a ±15 V power supply. Assume R1 = R2 = R3 = R4 = R. Assume the op amps are ideal.
If Vi = 1 V, V1 would be
A. ?2 V
B. 1 V
C. ?13.6 V
D. 2 V
E. 0 V
Answer: B
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