essentials of software engineering, 4th edition,

I have 3Q must use ur own word 

 I use  Essentials of Software Engineering, 4th edition


1- Discuss why it is important to document the requirements specified, and list three reasons.

2- Based on your answer to Exercise 1, discuss how a novice Agile software developer involved in collecting and documenting requirements may misapply the Agile methodology.

3- What purpose does the final signing off of the requirements specifications document serve? What are the potential problems that may arise if there is no such process?