2011·河北唐山·一模
解题方法
1 . 给出以下命题:
①双曲线
的渐近线方程为
;
②命题“
”是真命题;
③已知线性回归方程为
,当变量
增加2个单位,其预报值平均增加4个单位;
④设随机变量
服从正态分布
,若
,则
;
⑤设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2279df7e4731bd6490aebf13d9856dc6.png)
则正确命题的序号为________(写出所有正确命题的序号).
①双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acca1c00ee33a8d7aabf1d626541259e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95b60de1f6993edd7275bcf8b9527dd.png)
②命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f542f7ffedb36713a74875fbd913ef8.png)
③已知线性回归方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8a20de7a89ee822d3e55db1205cef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
④设随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37bbde2076bfa6dd859f7787e155ab8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5e4c04e11c99553d865c87765c3380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5f03eb7d0c7fafb8750602173748ad.png)
⑤设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab68d62663af2e888754d86085ad27a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2279df7e4731bd6490aebf13d9856dc6.png)
则正确命题的序号为________(写出所有正确命题的序号).
您最近一年使用:0次
名校
2 . 给出以下四个命题:
①若
,则
;
②已知直线
与函数
,
的图像分别交于点
,则
的最大值为
;
③若数列
为单调递增数列,则
取值范围是
;
④已知数列
的通项
,前
项和为
,则使
的
的最小值为12.
其中正确命题的序号为__________ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3d6063ee5703cb140dfc69c9cde0bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfa5bb8b7d70c8dbf01bbc01d2b2019.png)
②已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b923078510697d5f7f9ea392eb76dd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8feb6516836167daab0bad41689b5d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35b1e8a952aac4f4cdaaf02d868d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
③若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7c33b314a69d8a715bfd7e1481f0463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb74292380b8df9519b9c33bfd564f8.png)
④已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c4593f37ce523cfa8fb5c102240319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49763402b2f2023f0ba64c37924267d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
其中正确命题的序号为
您最近一年使用:0次
2020-05-22更新
|
779次组卷
|
3卷引用:河北省张家口市第一中学2021届高三(实验班)上学期期中数学试题
3 . 下列四个命题:
①函数
是奇函数且在定义域上是单调递增函数;
②函数
有两个零点,则
;
③函数
,则
的解集为
;
④函数
的单调递减区间为
.
其中正确命题的序号为__________ .
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f445485ca47631a2b2eaed41de8406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9977b59a789b7cfdd49185deb2b1b0d7.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120c5efbaa301be0271488d3994ae06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/202fefd835bd75a1f618e250464cbb6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e311297ea5a2002666523d2497bd88.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f05bea1d22f23dbdefafa8e410a9001.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c2240415557f2c06b1ed3763e92f029.png)
其中正确命题的序号为
您最近一年使用:0次
名校
4 . 在下列给出的命题中,所有正确命题的序号为_____________ .
①若
,则
与
的夹角为锐角;
②对
,若
,则
;
③若实数
满足
,则
的最大值为
;
④函数
的图像关于点
对称.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1e552a1451270703a86e592d7dd656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
②对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6653dd342a6df38335d64e9e720e967d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a618d08d71463522c37df3378d358850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a07bb6242e3d0e762f946f158c379afb.png)
③若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17b0033ec26789418ffe13fa677e0f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8a1679a44eef126d97ee3b4fd81050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/610e79d39abb7b6e580961f487d455b0.png)
您最近一年使用:0次
2016-12-03更新
|
470次组卷
|
3卷引用:2015-2016学年河北省石家庄一中高二上学期期中数学试卷
2012·河北·三模
5 . 下列四个命题:①若
,则函数
的最小值为
;
②已知平面
,直线
,若
则
//
;
③△ABC中
和
的夹角等于180°-A;
④若动点P到点
的距离比到直线
的距离小1,则动点P的轨迹方程为
.
其中正确命题的序号为_________
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/f7346d22823247f898035364c7decb75.png?resizew=59)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/5a3de8a91ea54f12927bec75b2917444.png?resizew=72)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/33cbfd263d9f4901a9c5929d0eec3246.png?resizew=32)
②已知平面
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/09c81b8c723f4a4bb45b26b2289250ec.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/babcca62adcc4e269f0ca20d76447f0e.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/773cd5fb03da4680a0739f0b76b6e464.png?resizew=133)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/57408d9d99cf4cc99d725fbc3762e2c5.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/94c51ba953dd4286a74539a43e23e912.png?resizew=17)
③△ABC中
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/d77373bc29854b458fb8bc5ba8bc6e66.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/3c1885307107407c8b2c46c59053fad8.png?resizew=25)
④若动点P到点
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/86e7be3ac7b74444aaaab9d82991ab58.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/648ec568a30840d7ade1729be8f41ca2.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570747699372032/1570747704819712/STEM/6a25baaa55a6430591cac31bb7a67c84.png?resizew=55)
其中正确命题的序号为
您最近一年使用:0次
11-12高一上·河北衡水·期中
6 . 有下列四个命题:
①函数
为奇函数;
②函数
的值域为
;
③已知集合
,若
,则a的取值集合为{-1,13};
④集合A={非负实数},B={实数},对应法则f:“求平方根”,则f是A到B的映射.
其中正确命题的序号为:___________
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926b43dbd35eff88523739d4ba9220a2.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265f0662653525c979b3de4d60d75ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69c4421a0953af741c3254c09c667f8.png)
③已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c031143a2fc778038fd4b1192cdc42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
④集合A={非负实数},B={实数},对应法则f:“求平方根”,则f是A到B的映射.
其中正确命题的序号为:
您最近一年使用:0次
名校
7 . 下列说法中错误的是__________ (填序号).
①命题“
,有
”的否定是“
,有
”;
②若一个命题的逆命题为真命题,则它的否命题也一定为真命题;
③已知
,若
为真命题,则实数
的取值范围是
;
④“
”是“
”成立的充分条件.
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281b260fe94c42258b7fa8c6bc6cefa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27d88a4295635c2d6d00e1aa29efc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727483dc6109a1e22b9a8855a5719380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eeff91263ef999174b55518dc95d0ea.png)
②若一个命题的逆命题为真命题,则它的否命题也一定为真命题;
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ab9bdbc4c514ee6ce2c4559cf8de207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eca91737a79d662f6869baf93a071862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44e22b80c4d775cea5f632123f0d9f3.png)
④“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0469b312798e19c24fe494d03fb0a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5915d59c5ab0ba013b8cf43c854c284b.png)
您最近一年使用:0次