It asks only that you apply the given generic solution. Find the two derivative and plug them in. it's not clear from this where you are struggling.
I have already proved that z= a-bi, but the second part of the question makes no sense to me. Please help, I have been awake for 12 hours stuck on this single question!!
It is the second part of the questions wgere it asks me to use z to derive a solution for x is where I am stuck. I literally have no idea what to do...
1) Try to calm down.
2) If you REALLY need instant turn-around, you probably should consider paying for it.
3) I'm a bit puzzled by the assignment. Isn't it done for you there on the page?
4) Have you shared "Mathematical Model (1)" or "Equation (1)" with us?