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开放性问题一般可分为:探究条件、结论开放、条件重组、类比归纳、存在判断、策略开放等类型.现分别说明:1.探究条件给出题目的结论,但没有充足的产生结论的条件,并且这类条件常常是不惟一的,需要解题者从结论出发,通过逆向思维去判断,追溯出产生结论的条件,并通过推理予以确认.这种条件探究性问题实质上是寻找使命题为真的充分条件或充要条件.
Open questions can generally be divided into: exploration conditions, openness of conclusions, conditional reorganization, analogy induction, existence judgment, strategy opening, etc. Now they are explained respectively: 1. The inquiry condition gives the conclusion of the topic, but there are not enough conditions for the conclusion , And such conditions are often not unique, the problem solver needs to start from the conclusion, judge by reverse thinking, trace back the conditions that produce the conclusion, and confirm it through reasoning. This conditional inquiry problem is essentially to find the title It is a true enough condition or a sufficient and necessary condition.