Use Mesh analysis z parameters are given by, V₁ = Z₁₁I₁ + Z₁₂I₂ ...(a) V₂ = Z₂₁I₁ + Z₂₂I₂ ...(b) Apply KVL to mesh 1 V₁ = 3I₁ - 2I₃ ...(i) Apply KVL to mesh 2 V₂ = 2I₂ + 2I₃ ...(ii) Apply KVL to mesh 3 5I₃ + 2I₂ -2I₁ =0 ...(iii) 5I₃ = 2I₁ - 2I₂ Put I₃ in eq. (i) ...(iv) Put in (ii) Similarly, ...(v) Compare equation (iv) to (a) and equation (v) to (b) ∴ .