Find v? in the op amp circuit of Fig. 5.92.
 FIGURE 1.png)
The output of the first op amp (to the left) is –(100k/10k)0.07 = –700 mV. The output of the second op amp has to be equal to –0.7[100k/70k] = –1 V. Finally the output of the third op amp is –[100k/50k](–1) = 2 V.
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