有关双量词求参数的问题是简易逻辑板块知识中比较困难的问题,与单量词求参数问题比较起来具有逻辑更复杂、理解更困难等特点,是考查学生对所学数学知识掌握理解水平与数学思维能力的一种重要题型。本文用图示法从易于学生理解的角度来探讨双量词求参数问题,寻找等价转化中的不变法则。 The problem of seeking parameters for double-quantity words is a relatively difficult problem in the simple logical plate knowledge. Compared with the single-valued word seeking parameters, the problem of seeking parameters is more complicated in logic and more difficult to understand. It is an examination of the students' understanding of maths knowledge and mathematics An important question of thinking ability. In this paper, the graphic method is used to explore the problem of double-quantity word seeking parameters from the perspective of easy-to-understand students in order to find the invariant law of equivalent transformation.