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如果A概念刻画的对象包含B概念刻画的对象,那么这两个概念之间的关系称为从属关系,其中A概念叫作B概念的上位概念,B概念叫作A概念的下位概念(如马是白马的上位概念,白马是马的下位概念).上位概念与下位概念之间有着密切的联系,因此在解题过程中我们可以利用上位概念巧妙地解决下位概念的问题.函数与数列就是这样,数列是特殊的函数,函数是数列的上位概念.因此在解决数列问题时.我们可以借助函数来解决.
If the A concept portrays an object that contains a B concept object, then the relationship between the two concepts is called affiliation, in which the A concept is called the concept of the B concept, and the B concept is called the concept of the A concept (such as the horse. It is the concept of the upper position of the White Horse. The White Horse is the lower concept of the horse.) There is a close connection between the upper concept and the lower concept. Therefore, in the process of solving problems, we can use the superior concept to subtly solve the problem of the subordinate concept. This is the function and the sequence. A sequence of numbers is a special function. A function is a superordinate concept of a sequence of numbers. Therefore, when solving a sequence of problems, we can use functions to solve it.