论文部分内容阅读
数列和式不等式证明问题是高中数学永恒的话题,也是每年高考必考的热门考点,因此怎样证明数列和式不等式是师生们非常关注和必须解决的问题,也是学生必备的解题技巧,证明数列和式不等式的基本策略是放缩,因此如何放缩成为能否成功证明数列不等式的关键,下面以近几年高考题为例谈谈三类常见的分式型数列和式不等式放缩策略.1分母是一次型例1(2015年高考广东卷理科第21题第(3)问
Series and inequalities prove that the problem is the eternal topic of high school mathematics, and also a popular entrance exam every year, so how to prove that the series and inequality are teachers and students are very concerned about and must solve the problem, but also students essential problem solving skills, The basic strategy to prove series inequality and inequality is scaling. Therefore, how to defragment becomes the key to the successful demonstration of series inequality. Take the college entrance examination questions in recent years as an example to discuss three common types of fractional series and inequality scaling strategy .1 The denominator is a type 1 (Question 2015, Question 21 of the 2015 Guangdong Entrance Examination)