Op amp practice problems
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Read the op-amp class notes.

For the circuit shown,

• R₁ = 150 kΩ
• R₂ = 220 kΩ
• R₃ = 390 kΩ
• R_f = 270 kΩ
• v_i1 = 9 V
• v_i2 = 40 mV
• v_i3 = -0.9 V

What is the output voltage v_o?

Answer