“命题”是高中数学选修2-1中的一个概念,也是高考必考的内容之一,试题难度不大,学生应该是可以拿分的,但是如果不注意几个细节,也可能会丢分,具体归纳如下:1.注意“命题的否定”和“否命题”的区别“命题的否定”和“否命题”两者的字眼比较相近,容易混淆。“否命题”是一个概念,是相对于“原命题”而言的,两者的条件和结论都是互相否定的;“命题的否定”则是对一个命题进行否定,是在条件满足的情况下去否 “Proposition ” is a concept of high school math elective 2-1, but also one of the content of the entrance exam, the exam is not difficult, students should be able to get points, but if you pay attention to a few details, may also be Discard points, specifically summarized as follows: 1. Note that “the proposition of the negative” and “no proposition ” the difference “proposition of the negative ” and “no proposition ” the two words are similar, easy to confuse. “No Proposition ” is a concept which is relative to “Original Proposition ”, the conditions and conclusions of both are mutually negative; “Negative Proposition ” is to negate a proposition, Whether the conditions are met or not?