近年来,在“素质教育”的号召下,为使学生具备当代社会中每一个公民适应日常生活,运用所学知识解决实际问题,在中考试题中频频出现应用一次函数的最值问题解决实际问题的题型,学生在解答时,只知二次函数有最值,便力求用二次函数去 In recent years, under the call of “quality education”, in order to enable students to adapt to everyday life in every citizen of the contemporary society and apply what they have learned to solve practical problems, the application of the first-order function to the most value problem has frequently been resolved in the mid-test questions. In the question of the actual problem, the student only knows that the quadratic function has the most value when he answers, and he tries to use the quadratic function.