Cuyamaca College Electromagnetic Waves Questions

I’m working on a electrical engineering multi-part question and need an explanation and answer to help me learn.

Need help solving 4 homework.

Here is a sample problem:
Let us define our initial waveform. We have a right–going voltage wave +( , )= +0 ( − ) through
a lossless transmission line. From this point forward, let us simplify the mathematics by assuming all
waves, right–going or left–going, have the same − term and only discuss the x–dependent coefficient
+( )= +0 . will still be relevant for discussing some of the physical properties.

We say that Γ= − 0
+ 0 . The expression (1+Γ) +0 is obviously a voltage drop across some
circuit element in the TL system, but which one? Explain your reasoning.

Assuming we introduce loss to the TL, qualitatively draw the reflected wave −( ) starting from
=0 and moving to the negative direction.

In terms of ′, ′, ′: what is for this lossy wavefunction?