在简易逻辑学习中,倘若对基本概念认识不清,理解不到位,思考不够严谨,就很容易出现这样或那样的错误,如果同学们在学习中能关注下面几个问题,那么解题时就可以避免错误.一、忽视逻辑联结词的位置例1已知命题P:不等式x2+2x-3>0的解集是{x|x>1}; In simple logic learning, if the understanding of the basic concepts is not clear, understanding is not in place, and the thinking is not strict enough, it is easy to appear this or that mistake. If the students can pay attention to the following questions in the study, then when the problem is solved, Errors can be avoided. I. Ignoring the position of logical connectives Example 1 Known proposition P: The solution set of the inequality x2+2x-3>0 is {x|x>1};