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二次函数是初中阶段所学的最后一种函数,它不仅是初中代数内容的引申,也是高中学习圆锥曲线等知识的基础.所以,在历届中考试题中,二次函数都是不可忽缺的内容.现结合具体的实例,对二次函数考点进行归纳解析,以便更好的理解和掌握其相关知识.考点一:二次函数的定义对二次函数定义的考查,只要把准其概念的本质,无论以何种题型呈现,都可正确解答.
The quadratic function is the last function learned by the junior middle school, which is not only the extension of junior high school algebra content, but also the basis for learning conic in high school, etc. Therefore, the quadratic functions are indispensable in all previous exam questions Content.Combined with specific examples, the quadratic function test point induction analysis, in order to better understand and master its related knowledge.Experiment 1: The definition of the quadratic function To test the definition of quadratic function, as long as the concept of its Essence, no matter what kind of questions presented, can correct answer.