C) Am I Solving this Hyperbolic Functions Homework Correctly?

[orbsoner]

Homework Statement

Attached is the problem

Homework Equations

My question is am i going about it the right way for question C). I have done A and B and am sure they are correct.

The Attempt at a Solution

Attached

 

[haruspex]

[am i going about it the right way for question C).

I don't think so.
Look at how you solved b). What relationship between the coefficients did the method depend upon? E.g. suppose the constant term had been something other than -2. Would that have radically changed the method of solution? What about the other two?
When you've determined what the relationship is, you need to scale x to make the more general equation satisfy that relationship.