Transfer function of a second order system

[influx]

Homework Statement

Homework Equations

The Attempt at a Solution

I have done question 1.18 and I understand it completely. However, for question 2.5, I do not understand how they got G(s)? Why isn't the G(s) in question 2.5 the same as G(s) at the bottom of question 1.18? I asked my lecturer and she spent about 10 minutes trying to figure out and eventually said that the answer for question 2.5 is a mistake and that G(s) should've been as in question 1.18. I just want to make sure whether she is right in saying this? Is G(s) in the answer for question 2.5 indeed a mistake? She seemed a bit unsure hence why I am checking on here. The same method (like question 2.5) has been used to calculate transfer function in subsequent questions.

Thanks

 

[rude man]

It's obvious - G(s) should be the same in 1.18 and 2.5.
She probably seemed befuddled trying to figure out how she could have made the mistake.