*해설

<문제 해설>
무손실선로
- Z0 = (Z/Y)^(1/2) = (L/C)^(1/2)
- r = (Z/Y)^(1/2) = jw * (LC)^(1/2)
- α = 0, β = w * (LC)^(1/2)
무왜형 선로
- Z0 = (Z/Y)^(1/2) = (L/C)^(1/2)
- r = (ZY)^(1/2) = (RG)^(1/2) + jw(LC)^(1/2)
- α = (RG)^(1/2), β = w*(LC)^(1/2)