不等式(组)是初中数学的重要内容之一,理解不等式(组)解集的意义,灵活运用不等式的基本性质,是正确求解不等式(组)问题的关键.同学们在应用不等式(组)时,常常会出现一些不易觉察的错误,现将几类典型的错误举例剖析如下,以使同学们提高警觉,不再犯类似的错误.一、概念不清例1判断下列说法是否正确.(1)式子-1>0不是不等式.(2)x>4是不等式x+2>5的解集.错解:(1)正确.(2)正确.剖析:认为(1)正确的同学对不等式的概念理解不透.事实上,只要是用不等号连接 Inequality (group) is one of the important contents of mathematics in junior high school. Understanding the meaning of the inequality (group) solution set and using the basic properties of inequality is the key to correctly solve the inequality problem. , There are often some unobtrusive mistakes, now several typical examples of mistakes are analyzed below, so that students are vigilant, no longer make a similar mistake. First, the concept is not clear Example 1 to determine the following statement is correct. (1) (2) x> 4 is the solution set of the inequality x + 2> 5. The wrong solution: (1) Correct. (2) Correct Analysis: (1) correct students to inequality The concept of impermeable.In fact, as long as the use of inequality connected