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二次函数作为初中数学的重要知识点,是每年中考的必考点。由于二次函数易与其他知识点相融合,经常会以压轴题的形式出现,因此也是学生比较犯难的一类题目。利用数形结合思想,将“数”与“形”巧妙结合在一起,可以将繁琐、抽象的函数问题变得简单化、直观化,从而帮助学生更高效、准确地解决好函数问题。
Quadratic function as an important point of knowledge of junior high school mathematics, is the annual test of the necessary test centers. As the quadratic function is easy to integrate with other points of knowledge, often in the form of pressure axis problems, it is also a class of students more difficult problem. Using the combination of number and form combination, the ingenious combination of “number ” with “shape ” simplifies and visualizes the cumbersome and abstract function problems so as to help students solve the function more efficiently and accurately problem.