1 . 给出以下四个结论:
①平行于同一直线的两条直线互相平行;
②垂直于同一平面的两个平面互相平行;
③若
,
是两个平面;
,
是异面直线;且
,
,
,
,则
;
④若三棱锥
中,
,
,则点
在平面
内的射影是
的垂心;
其中错误结论的序号为__________ .(要求填上所有错误结论的序号)
①平行于同一直线的两条直线互相平行;
②垂直于同一平面的两个平面互相平行;
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/713288c700aee0f6f797e06760466185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73552465f894573a9147f9a81779b5be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de666db0febae223cc4d1dc189d71ca6.png)
④若三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
其中错误结论的序号为
您最近一年使用:0次
2 . 声音是由物体振动产生的声波,其中包含着正弦函数,纯音的数学模型是函数
,我们听到的声音是由纯音合成的,称之为复合音,若一个复合音的数学模型是函数
,给出下列结论:
①
的图象关于直线
对称; ②
在
上是增函数;
③
的最大值为
; ④
的图象关于
对称
其中正确说法的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e83347805bcbdf7f28616c4feeeebb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc97e5ada39650b93091d927be157b.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c3319647314c3b6d82958a909acd2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba7039324a6d810f4d5603d4edeb70e.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8c5671c7a231e69641186f554755f0.png)
其中正确说法的序号为
您最近一年使用:0次
名校
解题方法
3 . 已知圆
与圆
,在下列说法中:
①对于任意的
,圆
与圆
始终相切;
②对于任意的
,圆
与圆
始终有四条公切线;
③
时,圆
被直线
截得的弦长为
;
④
分别为圆
与圆
上的动点,则
的最大值为4
其中正确命题的序号为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f1dc81fb995b3023d56f82ff964a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61a2314d1f465b9940f08e0b5f55f88a.png)
①对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe211e0dea7a44863e5e1706633c3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
②对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe211e0dea7a44863e5e1706633c3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee117579f5fc3944bbf7f342f50e450.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/601d4c79cdabd1a49a6b8e6d026e663f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef812f839622326a7d7027cc806aaeb.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b09e2d46f94b9ca3caf3f8283619c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211b9e53e4677ae9e2b20d5f7ce0a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a52e26180930ad5b56a8a45f28a0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2a0f156c21a6d3387e9c5a15b373d1.png)
其中正确命题的序号为
您最近一年使用:0次
2022-10-13更新
|
975次组卷
|
8卷引用:四川省成都七中2019-2020学年高一下学期6月考试数学试题
4 . 对下列命题:
(1)
的最小值为4;
(2)若
是各项均为正数的等比数列,则
是等差数列;
(3)已知
的三个内角
,
,
所对的边分别为
,
,
且最大边长为
,若
,则
一定是锐角三角形;
(4)若向量
,
,且
是锐角,则实数的取值范围为
;
其中所有正确命题的序号为_________ (填出所有正确命题的序号).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92764eb4fd255796e92c2c4db5909efc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc71a2fd8c6b263feea5ff5d6a36121.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95563a79e3b68c597ae1e5167516ff88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(4)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62eed5791457162b13ee2441e4ce5a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c0e5d846bda84a19077cc7ad8f4ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6d51b27236dbd7f32f5e1ac86c9e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a891eb0f07654c6dda4380b2fae38e8a.png)
其中所有正确命题的序号为
您最近一年使用:0次
2020-07-25更新
|
502次组卷
|
2卷引用:四川省眉山市2019-2020学年高一下学期期末考试数学试题
5 . 已知函数
,有下列四个命题:其中正确命题的序号为_____ .(填上所有正确命题的序号)①若
,要得到函数
的图象,只需将函数
的图象向右平移
个单位;②若
,则函数
的一个对称中心为
;③若
的一条对称轴方程为
,则
;④若方程
的正实数根从小到大依次构成一个等差数列,则这个等差数列的公差为
.
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/32f58c7f1fa74f2ca2271e782f87f7ee.png?resizew=220)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/b8e81a0b121e4dfb8c1e7675b9b54f1d.png?resizew=93)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/eef3657ef1714f52a100d893c3ccfc78.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/a4e4853cbeec486f89e3ce5a9eaca63c.png?resizew=77)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/1957592ddd084e389a3693003ac415fb.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/fbb46f9fc2634e0f8492014b9dad2370.png?resizew=81)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/eef3657ef1714f52a100d893c3ccfc78.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/b20535b79ff94fe9b2c279563f4f0105.png?resizew=46)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/eef3657ef1714f52a100d893c3ccfc78.png?resizew=61)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/a203d6e592594c92a743495ed3cd8df7.png?resizew=42)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/398232110d724cb3adcbffd032a07453.png?resizew=37)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/9bc706598cd249dc87e83ab189046b0e.png?resizew=143)
![](https://img.xkw.com/dksih/QBM/2016/6/23/1572816948092928/1572816954245120/STEM/9bd24ca6953245f5a16a96b0f6f10050.png?resizew=15)
您最近一年使用:0次
名校
6 . 有以下结论:
①存在
,使得
;
②设
是平面
内一定点,
为平面
内一动点,若
,则
为
的外心;
③已知
所在的平面上的动点
满足
,则直线
一定经过
的内心;
④若数列
,
的通项公式分别为
,
,且
,对任意
恒成立,则实数
的取值范围是
.
其中正确的结论序号为___________ (请把所有正确的结论序号都写出来).
①存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b682778d7f3b4bb6e0950de69453c3.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1983fa9be423eecc616de136bb1d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
③已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8908bb969d28eb473a60c9e8f4073e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d71d79946af932cde450a36195e2493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2745a8fc9492e21bec0c1dcab3932181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ac679ad239090a6ce21a10b47e332c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc94efe8dd558fb942cae866b324748.png)
其中正确的结论序号为
您最近一年使用:0次
名校
解题方法
7 . 给出下列四个命题:
①若
,则
为等腰三角形;
②函数
的最大值为
;
③在
中,若
,则
的形状是钝角三角形;
④用篱笆围一个面积为
的矩形菜园,要使所用篱笆周长最短,则所用篱笆最短的周长是
.
其中正确的序号为__________ (注:把你认为正确的序号都填上)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b883d9703a1deaf8dbc18097c6b8bb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89deb3ed56b145b87f4711a49b8ab094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
③在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272058608afabdb02a59321e1bffe344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④用篱笆围一个面积为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6711f79513b534982a9ada2b625e9fdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c758c27bec97c234d1d818c40f3d3f.png)
其中正确的序号为
您最近一年使用:0次
名校
8 . 有以下结论:
①不存在
,使得
;
②若
,则a,x,b成等比数列;
③设O是平面ABC内一定点,P为平面ABC内一动点,若
,则O为
的外心;
④已知
所在的平面上的点P满足
,则直线AP一定经过
的内心.
其中正确的结论序号为______ (请把所有正确的结论序号都写出来).
①不存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e36c9c91220b0f2cbd4a48e8fa90e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b682778d7f3b4bb6e0950de69453c3.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99047070ae53baae5a237f7fc510db89.png)
③设O是平面ABC内一定点,P为平面ABC内一动点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1983fa9be423eecc616de136bb1d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8908bb969d28eb473a60c9e8f4073e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
其中正确的结论序号为
您最近一年使用:0次
名校
9 . 下列说法正确的序号为( )
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() ![]() |
您最近一年使用:0次
2022-01-16更新
|
655次组卷
|
6卷引用:四川省四川外国语大学附属外国语学校2022-2023学年高一上学期期末数学试题
名校
解题方法
10 . 下列说法中正确的序号为___________ .
①在同一坐标系中,函数
与函数
的图象关于
轴对称;
②函数
(
且
)的图象经过定点
;
③函数
的单减区间为
;
④任意
,都有
.
①在同一坐标系中,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b161347f6a2fcfd9bf0acf1e8a03fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463d84a4fbb7d0e1ca72911e70c4bacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa80ae0b0eab1f14cccf872500f0843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c34af900e0f2a076c26a5273d4f75b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95169f7287a6a0c9b6917eb2ceb245eb.png)
④任意
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2021-11-21更新
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2卷引用:四川省成都市四川大学附属中学2021-2022学年高一上学期期中考试数学试题