Ebook: Elementary Mathematics - Selected Topics and Problem Solving

"The school course of elementary mathematics is fundamental to all mathematical knowledge, and without a firm grasp of this basic course there can be no question of mastering the higher divisions of the subject, of applying mathematics in one's practical scientific and technological work.
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The purpose of this text is to help the student think through the logical processes of a solution, and to teach the student to ask himself why a certain thing is being done and to be able to answer that question. It is vitally important that the student be able at every stage in a solution to realize what has been done and what there is left to do. In short, the authors have made an attempt to show the student how to solve problems properly."--quoted from the introduction of the book.