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“含参”问题的字母取值范围的求法往往需用分类讨论的方法来解决,其中被分类的对象与待求取值范围的对象可能是同一对象,也可能是不同对象,其求解过程与结果确定常被混淆.下面介绍两种不同特征的分类.
The method of calculating the range of letter values of the “Including Participation” problem is often solved by using the method of class discussion. The object to be classified and the object to be evaluated may be the same object or different objects. The solution process is The results are often confused. The following describes the classification of two different features.