本文归纳出求解集合问题的致错点如下: 1.混淆代表元素的意义致错 【例1】若P一丈y}y~2二2,x任R},Q二〔夕},~2x2+3,二任R},则P自Q~() (A)P(B)Q (C)中(D)以上都不对 错解:选C. 【例2】若尸一弋y}y~Zx气x任R},Q一天(x,y)}y~2扩,x任R},则必有() (A)P门Q一中(B)P〔Q (C)尹一Q(D)PDQ This paper summarizes the error points for solving the set problem as follows: 1. Confusing the meaning of the representative element is wrong [Example 1] If P zhang y}y~2 two two, x is R}, Q two [even], ~2x2 +3, two positions R}, then P from Q ~ () (A) P (B) Q (C) (D) None of the above wrong solutions: election C. [Example 2] if the body is dead y} y ~Zx gas x any R}, Q one day (x,y)}y~2 expansion, x is R}, there must be () (A) P gate Q one (B) P [Q (C) Yin one Q(D)PDQ