二次函数是初中数学的重要内容,也是中考热点之一。在近两年全国各地中考数学试卷中,涉及抛物线平移、旋转、对称变换的试题频频亮相,这类问题新颖别致,综合考查同学们的思维能力,现举例说明。 Quadratic function is an important part of junior high school mathematics, but also one of the hot spots in the test. In the past two years in the national examination papers throughout the country, involving parabolic translation, rotation, symmetry transformation frequently appeared in the papers, such problems are novel and unique, a comprehensive examination of students' thinking ability, are an example.