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As for Math, I'm studying number theory from

*and went through*

**Serge Lang's Basic Mathematics**,**stewart's pre-calculus book**(but I think I may be going over it again since I didn't master it completely yet).

The thing is, I'm having some trouble deciding on books to improve even more on pre-calculus and to get a basic knowledge on Calculus (I need to be able to differentiate, integrate and find maxima and minima, not that hard)

I was thinking about buying

*https://www.amazon.com/dp/0471827223/?tag=pfamazon01-20)*

**Quick Calculus: A self teaching guide By Kleppner&Ramsey (**Because the test only needs a basic knowledge of Calculus and I've got so little time. Any advice on this? And is there a better book on pre-calculus than stewart's?

(These are some example math exams from 2014 and 2015 exams: https://www.dropbox.com/sh/1j6f4rplsv3b33h/AADv1SM3kbGWk4r3_IJbDrXFa?dl=0)

And as for physics, I'm currently studying and taking notes from Walter Lewin's MIT lectures. And doing some exercises on the

**Sears & Zemansky University Physics**book I purchased.

(Physics 2014/2015 exams: https://www.dropbox.com/sh/txqv20qwguyn33z/AAByidzZS8onloqYwk38rJBma?dl=0)

So, is my approach correct? Or should I attempt to change it? What is your opinion?

Thank you for reading this wall of text, I appreciate any help or advice you would give me.