论文部分内容阅读
人民教育出版社中学教学室编著的《全日制普通高级中学教科书 (试验修订本 ·必修》数学第二册(上 )》的教师教学用书 ,是广大中学数学教师的重要工具书 ,可笔者在使用该书的过程中 ,发现有的习题的解答欠妥 ,现例举之以与作者及读者共同商讨 .例 1 方程ｘ2 + ｙ2 + 2ａｘ-ｂ
The teacher’s teaching book “Full-time Ordinary Senior High School Textbook (Experimental Revised Edition/Compulsory) Math 2 (upper)” edited by the Teaching Office of the People’s Education Press is an important reference book for the majority of middle school mathematics teachers, but the author can use it. During the course of the book, I found that the answers to some of the exercises were not properly addressed. The examples are now discussed with the author and readers. Example 1 Equation x2 + y2 + 2ax-b