题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104617-73642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104617-80641.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104617-65647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104618-71895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104618-71558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104618-41695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104618-71895.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104618-30314.jpg)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104619-53125.png)
解析
试题分析:设此只蚂蚁在MN上点为E,距离N点距离为x,即求:AE+BE的最小距离
AE=
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104619-38970.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104619-26164.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104619-53125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104619-76472.png)
点评:此类试题属于难度较大的试题,尤其是考生很难想到展开求解的方法,如果一味的设未知数求解肯定难度很大。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104318-44215.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104318-15678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104318-84368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104318-34501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104318-55990.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104329-24539.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104329-95149.png)
⑴试判断四边形
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104329-36022.png)
⑵若
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104330-32980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104330-72358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104329-36022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104301-45124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104301-70525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104302-11712.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104302-68422.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104302-66447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104303-92689.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104303-80601.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104303-47220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104303-93639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104303-85327.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104301-45124.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104304-90478.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104255-10218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104255-23708.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104255-64749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104256-64813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104256-83076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104256-86615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104257-77885.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104257-83324.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104230-71322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104230-71120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104231-80007.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104231-86571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104231-30655.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104050-54348.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-42949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-82311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-42949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-94813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-14857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-94813.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104052-41787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104052-10729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104052-41787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104052-25481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104052-40959.png)
⑴求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104053-35320.png)
⑵当点
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-42949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104051-82311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191029/20191029104053-41554.png)
最新试题
- 1如图所示,将物体A放在容器B中,以某一速度把容器B竖直上抛,不计空气阻力,运动过程中容器B的地面始终保持水平,下列说法正
- 2关于哺乳动物运动系统的叙述,不正确的是( )A.运动系统由骨、关节、骨骼肌组成B.关节软骨和关节腔内的滑液,增强了关节
- 3材料一:为保持经济平稳较快发展。2009年末至2011年初,针对经济运行中出现的新情况、新问题,党中央、国务院站在科学发
- 4【题文】下列句中加点词的活用方式和例句相同的一项是 (
- 5在公式V=V0+at中,已知V=15,V0=5,t=4,则a=( )
- 6某学生在做用显微镜观察人的口腔上皮细胞的实验中,他发现在视野中有许多小圆圈,但他不知道这些小圆圈是细胞或是气泡.请问你如
- 7What she did us surprised.A. to make B. made C
- 8下列生理过程中能使ATP含量增加的是[ ]A.细胞有丝分裂后期染色体移向两极B.小肠中Na+进入血液的过程C.线
- 9此题要求改正所给短文中错误。对标有题号的每一行作出判断:如无错误,在该行右边横线上画一个“√”;如有错误(每行只有一个错
- 10已知函数(1) 若函数在上单调,求的值;(2)若函数在区间上的最大值是,求的取值范围.
热门考点
- 1我省是产煤大省,然而生产的原煤含硫量较高.(1)大量使用原煤作燃料,可能产生的后果是______.为了缓解能源短缺,必须
- 2(12分)近年来,从开门立法、征求意见渐成常态,到政府网站、政务微博纷纷推出,再到财政预决算、“三公”经费逐步揭开神秘面
- 3下图为利用生物技术获得生物新品种的过程示意图。据图回答:(1)随着科技发展,获取目的基因的方法也越来越多,若乙图中的“抗
- 4命题“若,则”的否命题为 .
- 5句型转换。 1. kind, what, they, like, of", would, flood(连词成句)
- 62010年,我市团委倡导发起“我能行!”系列主题活动,旨在锻炼青少年良好的心理品质。这一活动引起社会各界的关注,并在广大
- 7(1) (4分) ①某实验中需要测量一根钢丝的直径(约0.5mm).为了得到尽可能精确的测量数据,应从实验室提供的米尺、
- 8“龙生龙,风生风,老鼠的儿子会打洞”这句谚语揭示的生物现象是 [ ]A.遗传 B.变异 C.生殖 D.发育
- 9【题文】依次填入下面句子中的词语最恰当的一组是( )①他
- 10在空间中,垂直于同一直线的两条直线的位置关系是( )A.垂直B.平行C.异面D.以上都有可能