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Given that the op-amps in the figure are ideal, the output voltage $V_0$ is

  1. $(V_1-V_2)$
  2. $2(V_1-V_2)$
  3. $(V_1-V_2)/2$
  4. $(V_1+V_2)$
in Analog and Digital Electronics by (9.3k points)
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