在初中已经出现过反证法,而逆否证法出现在高中人教A版教材选修2-1和选修1-1《第一章常用逻辑用语》中,二者都是数学命题的证明方法,有什么关系呢?一、从概念来分析 In the junior high school there has been anti-card law, and the anti-negative card law appears in high school human teaching A version of the textbook elective 2-1 and elective 1-1 "first chapter common logic terms, both of which are mathematical proposition proof method, there What is the relationship? First, from the concept to analyze