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Consider the opamp circuit in the figure. Approximately what is $V_{0}$?

  1. $-\left(\frac{V_{1}}{2}+V_{2}\right)$
  2. $-\left(\frac{V_{1}}{4}+\frac{V_{2}}{2}\right)$
  3. $-\left(V_{1}+2 V_{2}\right)$
  4. $-\left(4 V_{1}+2 V_{2}\right)$
  5. None of the above

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