题目
题型:不详难度:来源:
已知命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123540-82592.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123540-72289.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123540-84854.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123541-91452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123540-72289.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123541-21502.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123541-87876.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-67927.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-52367.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-84120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-92315.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123543-19263.gif)
解析
解:因为
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-67927.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123543-29731.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123541-91452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123540-82592.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123541-91452.gif)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123540-82592.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123543-21669.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123544-86511.gif)
②若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123541-91452.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123544-58105.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123544-65421.gif)
由①②知,实数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-52367.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123544-76042.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123545-36158.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-84120.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123542-92315.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123543-19263.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123530-98749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123531-52753.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123522-62955.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123523-58611.gif)
①
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123523-45294.gif)
② l、m是异面直线,
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123523-45279.gif)
③ 若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123524-36168.gif)
④ 若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123524-86353.gif)
其中假命题是 。
①函数y=tanx的图象关于点(kπ+
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123515-10931.gif)
②函数f (x)=sin|x|是最小正周期为π的周期函数;
③函数y=cos2x+sinx的最小值为-1;
④设θ为第二象限的角,则tan
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123515-57703.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123515-57703.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123515-57703.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123515-57703.gif)
⑤若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123515-48360.gif)
其中正确的命题序号是________________________.;
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123508-16062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123508-82223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123509-37572.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123509-66925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123509-99167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123509-99167.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123509-66925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123510-51724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123510-73218.png)
A.0个 | B.1个 | C.2个 | D.3个 |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123446-68365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102123447-38090.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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