I have been trying to understand some of the examples in the chapter for over 2 weeks now, and so much isn't adding up. The book often doesn't explain their use of labels or subscripts and often leaves me scratching my head, guessing on what the precise intended meaning is. This text also tends to just throw numbers into a calculation without citing the variables in the equation/formula used. I can sometimes come up with a pretty good guess what they might be talking about, but occasionally I am completely at a loss on why the numbers used are present. The question I am looking at is Example 9.4 in the Chapter 9: Practical Operational Amplifiers of the Textbook Electronic Design: From Concept to Reality. It's worth noting that I had the prerequisite material for this course using Microelectronics by Sedra & Smith back in 2018 which used some different notation in some cases. I'm picking up on the followup course at a different school, using a different text. Anyways the questions are written on my photocopies in red. Some questions I have better ideas what the answers may be than others, so its not like I am completely clueless.
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