In the circuit of Fig. 5-20 find

(a) v₀ for R₁ = 1, R₂ = 3, R₃ = 2, and R₄ = 2, all in kΩ; 

(b) The input resistance R₂ in seen by v₂; 

(c) i₁ as a function of v₁ and v₂ and show that v₁ sees a variable load which depends on v₂.

Transcribed Image Text:

VI +1 +1 R₁ www R3 ) 2 B A UB VA RA + R₂ Vo