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

For the circuit shown,

• R₁ = 180 kΩ
• R₂ = 120 kΩ
• R₃ = 12 kΩ
• R_f = 150 kΩ

Find the expression for the output voltage in terms of v_i1, v_i2, and v_i3.

Answer