【摘 要】
:
三角函数的最值是三角函数中最基本的内容 ,也是历来高考的热点 .对这类问题只要我们找到恰当的方法 ,就可以简捷地求解 .具体方法如下 :一、配方法利用二次函数配方后 ,根据
【机 构】
:
甘肃省永靖县第九中学,甘肃省永靖县第九中学 731601,731601
论文部分内容阅读
三角函数的最值是三角函数中最基本的内容 ,也是历来高考的热点 .对这类问题只要我们找到恰当的方法 ,就可以简捷地求解 .具体方法如下 :一、配方法利用二次函数配方后 ,根据三角函数的有界性 ,可求得三角函数的最值 .例 1 求函数y =cot x2 sinx +cotxsin 2x的最值 .解 y=1 +
The trigonometric function is the most basic content of the trigonometric function, which is also a hot spot of the college entrance examination. For such problems as long as we find the appropriate method, we can simply solve the specific methods are as follows: First, the use of quadratic function formulation Then, according to the boundedness of the trigonometric function, the trigonometric function can be obtained. Example 1 Find the function y = cot x2 sinx + cotxsin 2x the most value. Solution y = 1 +
其他文献
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
最近,笔者对舒城县5所农村初中的英语教学情况进行了调查,旨在了解实施素质教育的情况。我对部分学校的英语教师进行听课调研,对部分学生进行个别访谈。从调查结果来看,农村
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看,本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
过去30多年中,国企改革话题贯穿始终。党的十八届三中全会上,李克强总理在政府工作报告中明确表示,“准确界定不同国有企业功能,分类推进改革。将加快国有资本投资公司、运营