对于结论不确定的问题 ,常以适合某种性质的结论“是否存在”的形式出现 ,称为结论开放型问题 .解这类问题的常用方法是 ,先假设结论中相对应的某一方面或结论成立 ,进行演绎推理 ,若推出矛盾 ,即可否定先前的假设 ,而得出相应的结论 ;若推出合理的结果 ,就说明假设正确 ,即结 The problem of inconclusive conclusions often appears in the form of “whether or not there is a conclusion” that fits a certain nature. It is called an open-ended problem. A common way to solve such problems is to first assume that the corresponding point in the conclusion is When the conclusion is established and deductive reasoning is introduced, if contradictions are introduced, the previous assumptions can be negated and the corresponding conclusions can be drawn; if reasonable results are obtained, the assumptions are correct, ie