The book is helpful enough, but in the practice ...

The book is helpful enough, but in the practice sections at the end of each chapter, it asks you to solve problems using formulas and jargon that it didn't go over in the chapter being tested. This makes these exams incredibly frustrating and takes away from the overall experience of studying since you become overly occupied with these problems, causing you to lose sight of the others. The book is relatively cheap so I guess you get what you pay for in this regard.

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