我国著名的数学家华罗庚曾说:“数缺形时少直观,形少数时难入微。数形结合百般好,隔裂分家万事非。”这句话说明了“数”和“形”是紧密联系的。“数”和“形”是数学的两根柱石,所谓数形结合就是根据数学问题的题设和结论之间的内在联系,既分析其数量关系,又揭示其几何意义,使数量关系和几何图形巧妙地结合起来,并充分利用这种结合来探索解决问题的思 Hua Luogeng, a well-known mathematician in our country, once said: “The lack of intuition is less intuitive when in the minority, and the difficulty is less in the minority.” The phrase combines “everything” with the best of both worlds. “Form ” is closely linked. The number “” and “shape ” are the two pillars of mathematics. The so-called number-shape combination is based on the internal relations between the problems and conclusions of mathematical problems. It not only analyzes the relationship between quantity and quantity, but also reveals its geometric meaning. Quantitative relationships and geometry cleverly combine, and make full use of this combination to explore the problem of thinking