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

For the circuit shown,

• R₁ = 5.6 kΩ
• R₂ = 18 kΩ
• R₃ = 5.6 kΩ
• R₄ = 18 kΩ

Find the expression for the output voltage in terms of v_a and v_b.

Answer