TITLE: what is the best book for Pre-Calculus?
QUESTION [18 upvotes]: i have missed pre-calculus knowledge in my school but i was good at maths, and now i am a computer science student, i am feeling bad being bad in maths, so i am looking for the best Pre-Calculus book, i love maths, i need the right well of precalculus books.

REPLY [2 votes]: Frank Ayres, First Year College Mathematics, Shaum's Outline
Based on how you describe yourself, think this is very efficient thing for you to study from.  In general Shaum's gets good response from students.  And for someone like you who is well into other courses but needs to go back and remediate a gap, it works great.  Very solid for self study with the answers and all included. And the writing is just enough to give you concepts but without drowning you in word soup.  Very practical drill book (I say that as a positive.)
I recommend an older used edition. Don't get a scan or electronic version either.
https://www.amazon.com/Theory-problems-first-college-mathematics/dp/B0007DPVM2
(copying link to older edition, but you can check newer edition for reviews if you want that.)