所谓开放型问题是相对于中学课本中有明确条件和明确结论的封闭型问题而言的.这类试题的知识覆盖面较大,综合性较强,灵活选择方法的要求较高,再加上题意新颖,构思精巧,具有相当的深度和难度.它重在考查学生的分析、探索能力和思维的发散性.下面就函数中的开放型问题分类解析,以开拓同学们的视野. The so-called open-ended questions are related to the closed questions in the middle school textbooks that have clear conditions and clear conclusions. Such questions have a large knowledge coverage, a strong comprehensiveness, and a high requirement for flexible selection methods. The concept is novel, the concept is exquisite, it has considerable depth and difficulty. It focuses on the students’ analysis, exploration ability and the divergence of the thinking. The following analysis of open questions in the function is used to open up the students’ vision.