论文部分内容阅读
读了《中学生数学》2011年3月祁正红老师的文章《设直方程须防漏解》一文,感受很深,由于直线方程的多样性和局限性,初学者在运用中,往往顾此失彼,难以周全,我认为,依据直线在坐标系中的位置和方向,可以把容易漏解的几种直线分为横平(斜率为0的直线,方程形通常为y=y_0)、竖直(斜率不存在的直线,方程形式通常为x=x_0),过原点(方程形式通常为y=kx)三种.
Read the “high school mathematics” in March 2011 Qi Zheng Hong teacher’s article “Let be straightforward equation leak-proof solution,” a text, deep feelings, due to the diversity and limitations of linear equations, beginners in the use of often overlooked, difficult to comprehensive , I think that according to the position and direction of a straight line in the coordinate system, several straight lines that can be easily leaked can be divided into horizontal lines (a straight line with a slope of 0, the equation is usually y = y_0), and the vertical Line, the equation is usually x = x_0), over the origin (the equation is usually y = kx) three.