Astrophysics Cosmology and Astrophysics through problems: Padmanabhan

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The discussion highlights challenges faced while using Padmanabhan's problem book on cosmology and astrophysics, particularly regarding the difficulty and time-consuming nature of some questions. Users express frustration with the astrophysics sections compared to the more familiar general relativity content. The author emphasizes that the book is intended as a supplement to conventional learning, suggesting that it may not be suitable for those without prior knowledge of the subjects. It is recommended to use this book alongside a more introductory textbook for better understanding. Overall, the book's design aims to facilitate learning through problem-solving rather than standalone mastery.
ergospherical
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I’ve really been struggling with this book since I started it a couple of days ago. It’s essentially a problem book designed to teach you about astrophysics, structure formation, radiation, fluid dynamics, etc. through a curated set of questions.

Some of the questions take a ridiculously long time, and others I’d have no clue how to attempt without generous hand-holding from the (admittedly very well-written) solutions. This is more of an issue for the astrophysics-based sections than the more familiar GR-based sections.

Any thoughts? Am I using this book incorrectly? Presumably Padmanabhan’s other (conventional) textbook on structure formation would serve as an ideal companion, but I feel that’d sort of defeat the entire point of this book (which is to learn through direct exposure).
 
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I suspect you are using it incorrectly.

The author makes it plain in the Preface that the book is intended to be a supplement to 'the conventional modes of learning' (p. xvi) and in the section entitled 'How to use this book' that 'If you know nothing about a subject, I am not certain whether this book - by itself - can help you to master it. In such a situation, it is best to use this book as a supplement to a more introductory conventional textbook.' (p. xxi).
 
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Im currently reading mathematics for physicists by Philippe Dennery and André Krzywicki, and I’m understanding most concepts however I think it would be better for me to get a book on complex analysis or calculus to better understand it so I’m not left looking at an equation for an hour trying to figure out what it means. So here comes the split, do I get a complex analysis book? Or a calculus book? I might be able to Borrow a calculus textbook from my math teacher study that for a bit and...

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