图表是数学的重要组成部分,当代数方法解决问题有困难的时候,我们经常想起图形,并利用图形解决问题,所以图形是学好数学必不可少的工具.但是,在不同的情况下,利用图形的要求也有所不同,有时要利用图形的大致形状,有时只要利用图形的大概意思,因此,我们要灵活的利用图形的特点,正确的画出图形的形状,完整的表示图形的意思,合理的利用图形 Charts are an important part of mathematics. When contemporary digital methods have difficulty solving problems, we often think of graphics and use graphs to solve problems. Therefore, graphics is an essential tool for learning mathematics. However, in different situations, using graphics The requirements are also different. Sometimes we need to use the general shape of the graph. Sometimes we only use the approximate meaning of the graph. Therefore, we must use the characteristics of the graph flexibly, correctly draw the shape of the graph, and fully express the meaning of the graph. Use graphics