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二次函数是初中代数中研究的一个重要内容,但是,由于它与二次方程、二次不等式之间有着密切的联系,因此在高中数学中的应用十分广泛,从而倍受命题看的青睐,纵览年86至96年的高考试题,涉及二次函数及其应用的题型频频亮相,屡见不鲜,并且常常在压轴题中出现,起着举足轻重的作用。然而,这一显而易见的命题动向,却并未能引起广大师生的重视,对二次函数的重要性认识不足,教学仍然停留在初中的水平上,导致许多考生面对这些试题束手无策,丢分严重。
The quadratic function is an important part of the research in junior high school algebra. However, because it is closely related to quadratic equations and quadratic inequalities, it is widely used in high school mathematics and is therefore favored by propositions. A high-level examination question from year 86 to year 96, involving questions of quadratic function and its application, is frequently seen, and often appears in the finale and plays a decisive role. However, this obvious trend in the proposition did not arouse the attention of teachers and students in general, and it lacks understanding of the importance of quadratic functions. Teaching still stays at the junior high school level, causing many candidates to face these questions and lose their points. serious.