This is effectively the best reference notes on the internet for calculus 1, calculus 2, calculus 3, and differential equations. You can definitely become proficient in these subjects on those notes alone, with practice. Paul’s Online Math Notes were my main reference material back in 2008-2009 in university. I am glad to see that it is still very popular.
The absolute best Calculus book for undergraduates majored in the formal engineering disciplines is Calculus, 6th edition, by Swokowski, Olinick, and Pence.
ISBN-10: 0534936245
ISBN-13: 978-0534936242
My (fraternal) twin brother used this book to teach himself calculus 2 in preparation for another course he needed to take. There are lots of supplementary materials that you can get for the book, like solutions manuals, study guides, and even a linear algebra supplement (although the latter is hard to find—I should probably scan all of the materials)
The absolute best Calculus book for undergraduates majored in the formal engineering disciplines is Calculus, 6th edition, by Swokowski, Olinick, and Pence.
ISBN-10: 0534936245 ISBN-13: 978-0534936242
My (fraternal) twin brother used this book to teach himself calculus 2 in preparation for another course he needed to take. There are lots of supplementary materials that you can get for the book, like solutions manuals, study guides, and even a linear algebra supplement (although the latter is hard to find—I should probably scan all of the materials)