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数形结合是把数或数量关系与图形对应起来,借助图形来研究数量关系或者利用数量关系来研究图形的性质,是一种重要的数学思想方法.数形结合思想实质是将抽象的数学语言与直观的图象
The combination of number and shape is to associate the number or quantity relationship with the graph. Using graphs to study quantity relations or to use quantitative relationships to study the nature of graphs is an important method of mathematics. The combination of number and shape is essentially an abstract mathematical language. With intuitive images