/sci/ - Science & Math

Everyone seems to only recommend this book (at least the people I’ve spoken too). Is this considered the standard go to or is there other stuff which is good too?

Does anyone know if good solutions are available anywhere? I’m not sure how to do the question in pic related and help is much wanted.

So if you can help a peasant out, or are aware of solutions for the book (which, if it really is the go to choice, I’m sure should exist), that would be much appreciated.

A few people have a handful of questions solved on GitHub... but not the particular ones I need