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เนื้อหาย่อ : The increasing complexities of our way of life, accompanied as they are an extended reliance upon science and mathematics, indicate that the ell-educated citizen should have a knowledge of the mathematics that ides some foundations for much of our progress. is the purpose of this book to present the mathematics that follows the of high school algebra and plane geometry and precedes the rigorous dy of the calculus. Since there is probably too much material in the for you to master in one year, your teacher will select those sections the text which he believes will serve your particular needs. You are uraged, however, to read the entire text if time permits. One of the primary objectives of this text is to prepare you to take more nced courses in mathematics. To succeed in these courses, one must to study! The following suggestions are offered for your consideration: 1. From the beginning of this text to the end, greater emphasis is pro- vely placed upon the necessity that you, the student, learn to read efully. Many times questions are raised in the textual material and gebraic details are frequently omitted. Read the material carefully, pt to answer these questions, and work out details which are omitted. 2. If, during the course of your study, you cannot understand some point cannot complete missing details, make a note of this immediately and your teacher to explain it to you or to the class. 3. In your study of mathematics, form the habit of studying at a regular and in a regular place. 4. Be certain that you understand a problem before you attempt to work In other words, have a plan of attack as you begin to work. Have some where you are going and how you intend to get there. 5. If you cannot formulate a plan of attack, study the preceding dis- on and the examples. Use the index freely to find topics that may you plan an attack. 6. Definitions, postulates, and theorems should be understood and embered. If you do not understand them, you probably cannot use