<P> In the general case the loss terms, R (\ displaystyle R) and G (\ displaystyle G), are both included, and the full form of the Telegrapher's equations become: </P> <Dl> <Dd> ∂ 2 V (x) ∂ x 2 = γ 2 V (x) (\ displaystyle (\ frac (\ partial ^ (2) V (x)) (\ partial x ^ (2))) = \ gamma ^ (2) V (x) \,) </Dd> </Dl> <Dd> ∂ 2 V (x) ∂ x 2 = γ 2 V (x) (\ displaystyle (\ frac (\ partial ^ (2) V (x)) (\ partial x ^ (2))) = \ gamma ^ (2) V (x) \,) </Dd> <Dl> <Dd> ∂ 2 I (x) ∂ x 2 = γ 2 I (x) (\ displaystyle (\ frac (\ partial ^ (2) I (x)) (\ partial x ^ (2))) = \ gamma ^ (2) I (x) \,) </Dd> </Dl>

Describe a real world example of when it is necessary that line segments are parallel