大家都知道高考试卷的课改卷的最后一个大题是一个三选一题,其中一个选题考的是不等式,近几年这道题大多考的是含绝对值的线性不等式,由于这道题不难,因此大多数考生都选做此题。随着课改卷在全国的逐步使用,各地老师和同学们对含绝对值不等式问题进行了大量的研究,形成了很多成熟的解法,其中一个很主流的解法,其口诀是“分段作图,数形结合”。显然这 We all know that the college entrance examination papers curl the last big problem is a three-on-one question, one of the selected topics test is inequality, in recent years most of this question is a linear inequality with absolute value, because this road The problem is not difficult, so most candidates are doing this question. With the gradual use of curricular reform in the country, teachers and students all over the world have carried out a large number of studies on the problem of the inequality with absolute value, forming a lot of mature solutions. One of the most mainstream solutions is the " Figure, a combination of figures . Obviously this