Edexcel IAL MAthematics C2 Doubts

[kruti]

Hi Guys,
Please help me out with the questions in the attached file.
The answers are given below the questions*

 

[Nafis Daiyan]

https://googledrive.com/host/0B1ZiqBksUHNYT1JhVExXbEs2dk0/REV1.pdf
Page 27 onwards