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函数是历年中考的热点和难点.其中,关于函数解析式的确定是非常重要的题型.以二次函数为例,近年来关于二次函数的三种解析式(一般式、顶点式、两根式或交点式)固然是必须掌握的,但其中一个突出的变化就是强化了对图形变换的要求.如:2012年陕西省中考数学题目的第10题:作为选择题的压轴题,今年仍然选择了考查二次函数的平移.再如2012年
The function is the hot spot and difficulty in the mid-year exam.Among them, the definition of the function analytic formula is a very important question type.As an example of the quadratic function, in recent years, the three analytic formulas (quadratic, vertex, Root, or intersection) is certainly a must, but one of the prominent changes is to strengthen the requirements of the graphics transformation.Such as: the 2012 Shaanxi province entrance exam math problem tenth question: as the multiple-choice questions, this year still choose To examine the translation of the quadratic function