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近年数学中考中出现了不少结构新颖、思维深刻、运用灵活的试题,这些试题常使学生感到困惑,难以顺利作答,究其原因主要是学生不知如何抓住问题的实质,挖掘出隐含条件,从而为解题打开入口,铺平道路.所谓隐含条件是指题目中含而未露、不易察觉的固有条件(包括几何意义及数学模型).这些条件常巧妙地隐藏在题设的背后,极易被人们所忽视.解题时,学生常因未能发掘题中的隐含条件,使求解陷入困境,或是得到错误的结
In recent years, there have been many fresh and thought-provoking exercises in the maths examinations. These questions often confuse students and make it difficult to answer the questions successfully. The reasons are mainly because the students do not know how to grasp the essence of the problem and find out the implied conditions , So as to open the door to solve the problem, to pave the way.The so-called implicit conditions refers to the problem without revealing, imperceptible inherent conditions (including the geometric meaning and mathematical models) .These conditions are often cleverly hidden behind the title , Easily overlooked by people. Problem solving, students often fail to explore the implied conditions of the problem, so that the solution into trouble, or get the wrong knot