Okay, so I've gone through calc I - III with Stewart's Calculus... I'm happy with the book for the most part, but I want a bit more theory now. I don't care what type of book, it could be like a pop-sci book for all I care, I just want to read about the theories behind the calculus without going broke. I've been recommended Spivak's book already but I can't afford a copy for another couple of weeks and wanted to see if anyone had any cheaper suggestions...Thanks in advance.(adsbygoogle = window.adsbygoogle || []).push({});

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# Need a good book on the theories of Calculus

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