I'm currently learning Calculus from Morris Kline's 'An Intuitive and Physical approach' but it lacks exercises and I'm finding it difficult to gain a formal understanding of some concepts from it. So I browsed through a couple of Calculus books the local library had and the one that stood out for me was the 7th edition of 'Calculus with Analytical Geometry' (Thomas and Finney)(adsbygoogle = window.adsbygoogle || []).push({});

Anyway, I've decided to buy a copy but I've got 3 options, 7th, 8th or 9th editions. They're all roughly the same price, but 7th is the most expensive, 8th is the cheapest. Also, some review say that the questions presented aren't challenging enough in this book - did anyone find this a 'problem?'

Thanks

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# Thomas/Finney's Calculus - which edition?

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