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Title: Great book but only if you want a deep treatment
Review: This is one of the best math books I have ever used; Apostol does a great job of giving you intuition and telling you why the topics are important. The exposition is very clear.However, this is not your usual Calculus I book. The level of approach is halfway between an intro to calc class where you learn HOW to calculate derivatives/integrals, and a real analysis class where you learn why derivatives and integrals are related and their axiomatic foundations.Bottom line: this is a great book if you want to understand calculus deeply. It is a warmup for real analysis. However, there are probably better books if your only interest in calculus is for using it to solve engineering or physics problems.
