在二次函数的实际应用中,有一类滑行最值问题(如飞机着陆滑行、汽车刹车滑行等),在求解这类问题时,部分同学感到无从下手,或者做题时易出错.下面我们就从三道例题出发,以函数图象为桥梁,分析和诠释三类问题的区别与联系,以帮助同学们消除理解上的障碍.例1(人教版数学教科书九年级上册习题22.3第3题)飞机着陆后滑行的距离h(单位:m)关于滑 In the practical application of quadratic function, there is a class of the most value problem of taxiing (such as airplane landing taxiing, car brake taxiing, etc.), some students find it difficult to start or solve problems when solving such problems. Starting from the three examples, the function of the image as a bridge, the analysis and interpretation of the differences between the three types of problems and contacts to help students to eliminate barriers to understanding. Example 1 (PEP mathematics textbook ninth grade exercises 22.3 Question 3 ) Plane glider distance h (in m) after landing on slip