前几日,笔者所在学校的一次模考中,理科压轴题的压轴一问“难”倒了全校学生,引起了笔者的注意.反思之余,面对学生现状,笔者从有效解题教学的关键点出发,精心设计了针对本题的讲解方案,力求让学生从归类题中领略通性通法,从慢教学中感悟数学思想的光芒,收到了良好的教学效果.现整理成文,以供研讨,敬请大家批评指正.1.模考实况:一题当关,众生莫解题目已知函数.f(x)=ax~2-xlnx. A few days ago, the author where the school a model test, the finale of science finale asked “difficult” down the school students, aroused the attention of the author.Introspection, in the face of student status quo, the author from the effective solution Teaching the key point of departure, well-designed for this topic to explain the program, and strive to allow students to learn from the classification of general pass through the law, from the slow teaching insights mathematic thinking of the light, received a good teaching results.Now organize the written, For discussion, please criticize correction .1 mode test live: a question is closed, the problem of living beings known function .f (x) = ax ~ 2-xlnx.