有下列命题:
①在函数
的图象中,相邻两个对称中心的距离为
;
②函数
的图象关于点
对称;
③“
且
”是“
”的必要不充分条件;
④在
中,若
,则角
等于
或
.
其中是真命题的序号为_____________ .
①在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86106a6b7d9818efa0966b99739eaec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6efe4dcec921254aaf23bd08b1a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03b011f69dfc5262a3d82f64676739b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bc2eeaca8a8ce4bcce2bff011a11bf.png)
④在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa183e22a39c5c8ca7054dd79e5cf5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/996bf3d35b6763cbc1a423b13a9df2dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/906ba2f77db39a6e782935af29ee17a6.png)
其中是真命题的序号为
更新时间:2020-02-20 23:11:12
|
相似题推荐
填空题-单空题
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适中
(0.65)
【推荐1】已知下列命题:
①函数
有最小值2;
②“
”的一个必要不充分条件是“
”;
③函数
在点
处的切线方程为
.
其中正确命题的序号是__________ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372013e3aed0b948b939117fe1bf170e.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b0b663c96a45e8031dde30026ad204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da322ac8867e8a47c6588601078abf18.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6fbe752fcec50b9cae9a0aba9d77b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8914269ade8c15e97352a32de9aa9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
其中正确命题的序号是
您最近一年使用:0次
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适中
(0.65)
【推荐2】已知
,
,
,
,若
为假命题,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fac11dd95cb4b78adb817fad02dedb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba1b90634591c50e0f268f1b8c21e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a6fc004861e4a5780736acea3a9e10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697da80270be67c88c6f742a75457d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
填空题-单空题
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(0.65)
【推荐1】设命题p:
,命题q:
,则
是q成立的_________ 条件.(填:“充分不必要”、“必要不充分”、“充要”、“既不充分也不必要”之一).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e38581b43f437454b86dae0daed9a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f90af9ba1a3d2362ecba6775e1d0030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
您最近一年使用:0次
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解题方法
【推荐2】请写出“
”的一个必要不充分条件:________________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552d996f4748a1c0d22149f9ead89f02.png)
您最近一年使用:0次
填空题-单空题
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名校
【推荐1】已知点
,
,
,
,若
,则
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27149c9ff20937492950f42084caa019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6481e5ef435b6ad8ecac30175f6871bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31cdfa2f68ce0272cd91749ececdd11f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca210dd79eb4d84d5ced7d8503006253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d5ee8431daf414931441d6ff1f92e8.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】已知函数
有且只有三个零点,设此三个零点中的最大值为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d39f4233a5281955239a4a98c693633.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf5a73de3466a84e1ec2ce20c63aa0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d39f4233a5281955239a4a98c693633.png)
您最近一年使用:0次