1:1  12-14[理·数学]丁老师教你解决运动变化类的新颖题
推荐理由：运动变化是本题的一个亮点，图形的变化引起了数量关系的变化．本题体现了小题综合化，视角独特，设计新颖． 讲解人：http://www.jiandan100.cn/teacher/e3a3f4df5e7a4ec68ee9286a386f3442/ ，全国著名数学特级教师，北京市陈经纶中学数学组组长，首席数学教师。 题面：如图放置的边长为1的正方形PABC沿x轴滚动．设顶点P(x,y)的轨迹方程是y=f(x)，则f(x)的最小正周期为_______；y=f(x)在其两个相邻零点间的图象与x轴所围区域的面积为_______．  说明：“正方形PABC沿x轴滚动”包括沿x轴正方向和沿x轴负方向滚动．沿x轴正方向滚动指的是先以顶点A为中心顺时针旋转，当顶点B落在x轴上时，再以顶点B为中心顺时针旋转，如此继续．类似地，正方形PABC可以沿x轴负方向滚动． 【答案及详解】 本部分内容设定了隐藏,需要回复后才能看到  跟帖分享你的答案，即可看到正确答案和解析！别忘了回帖后再点进来查看答案哦~本题的求解有利于强化概念、直觉思维、图形的变换和图形的处理技能，多多练习吧! ------------------------------------------------------------------------------------------------------------------------------------------------------------------ [每周一星] http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=657692& 查看更多本年级每周一题，请点击： http://www.jiandan100.cn/bbs/upload/forumdisplay.php?fid=386& 浏览本期“简单学习电子周报”完整目录：http://www.jiandan100.cn/bbs/upload/viewthread.php?tid=657668 |
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沙发#
发布于：2012-12-15 11:30
答案及详解
答案及详解答案及详解答案及详解 |
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板凳#
发布于：2012-12-15 18:11
答案及详解
答案及详解答案及详解答案及详解 |
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地板#
发布于：2012-12-15 19:22
答案及详解答案及详解答案及详解
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4楼#
发布于：2012-12-15 21:03
没有看懂题目 滚动的过程是什么呢 ？
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5楼#
发布于：2012-12-15 21:42
转动
 类问题，相关点法 |
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6楼#
发布于：2012-12-15 22:56
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7楼#
发布于：2012-12-15 23:37
:) [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2][s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2][s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] [s:2] |
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8楼#
发布于：2012-12-16 11:18
答案及详解答案及详解答案及详解
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9楼#
发布于：2012-12-16 15:44
 ccccccccccc |
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