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二次函数是初中教材中一个重要的内容,同时二次函数也是中考命题的重点,如何让学生对二次函数了解更加的深刻透彻.本论文运用数形结合思想对二次函数中的几何问题做了更深一步的研究,二次函数与三角形、四边形、圆和相似三角形常常综合在一起运用,解决这类问题需要用到数形结合思想,把“数”与“形”结合起来,互相渗透.
The quadratic function is an important content in the junior high school textbooks, and the quadratic function is also the focus of the proposition. How to make the students understand the quadratic function more profound. This paper uses the idea of combination of number and shape to solve the geometric problem in the quadratic function. Doing a deeper research, quadratic functions are often combined with triangles, quadrilaterals, circles, and similar triangles. To solve such problems, it is necessary to use a combination of numbers and ideas to combine “numbers” with “shapes.” Get up and infiltrate each other.