1.1. Briefly describe the fundamental differences between project-based and product-based software engineering. 1.2. What are three important differences between software products and software product lines. 1.3. Based on the example project vision for the iLearn system, identify the WHAT, WHO, and WHY for that software product. 1.4. Why do software product managers have to be generalists, with a range of skills, rather than simply technical specialists? 1.5. You are a software product manager for a company developing educational software products based on scientific simulations. Explain why it is important to develop a product roadmap so that final product releases are available in the first three months of the year. 1.6. Why should you implement a prototype before you start developing a new software product