论文部分内容阅读
一次函数在日常生活中有着广泛的应用.虽然其图象常呈现为直线型,然而,由于自变量的取值范围的不同.图象往往会呈现出分段形态,对应于所谓的分段函数的形式.分段函数的图象一般是由几条线段或射线组成的,其中每条线段或射线代表某一阶段的情况.求解时一定要注意分析分段函数图象的实际背景以及各段图象的意义,尤其要理解转折点处横、纵坐标的实际意义,充分运用数形结合的数学思想方法.为方便同学们的学习,现归纳几例供参考.
First-order functions have a wide range of applications in daily life. Although the image often appears as a straight line, however, due to the different range of independent variables, the image tends to exhibit a segmented morphology corresponding to the so-called piecewise function The segmentation function of the image is generally composed of several lines or rays, each of which line or ray represents a certain stage of the situation. Solving must pay attention to the analysis of the actual background of the image segmentation function and the paragraphs In particular, to understand the meaning of the image at the turning point, the practical significance of horizontal and vertical coordinates, make full use of mathematical combination of mathematical methods. In order to facilitate the study of students, are summarized for reference.