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

For the circuit shown,

• R₁ = 1 kΩ
• R₂ = 1.8 kΩ
• R₃ = 3.3 kΩ
• R_f = 33 kΩ
• v_i1 = 0 V
• v_i2 = 70 mV
• v_i3 = 90 mV

What is the output voltage v_o?

Answer