1 . 下列命题:①三角形的内心到三角形三个顶点的距离相等;②如果
,那么
;③若关于x的方程
的解是负数,则m的取值范围为m<-4;④相等的圆周角所对的弧相等;⑤对于反比例函数
,当x﹥-1时,y随着x的增大而增大其中假命题有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b459fe87934b307a2530694b479fa1a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77d55640f0ad639c1a23d3732acea3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124854f0fc4a32a8c87104c4447e1aba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2451b1b2dfcd03bb33cfafb7e634bf0.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
名校
2 . 下列说法:
①命题“
,
”的否定是“
,
”;
②函数
在闭区间
上是增函数;
③函数
的最小值为2;
④已知函数
,则
,使得
在
上有三个零点.
其中正确的个数是
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df62f80ddca67284233c37c026e4c820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2edbc31470f3a5c06938e32575c2bfb5.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a671d62e30365b9ec740ad4079c52ac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15641191c56b4df40e30f0b10c30243a.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e336498995370d4c66129dbe5a84d49.png)
④已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cbe01d0da376b00d80ac8c3620fed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82209f9134f5df863183c60f2386e34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6b28c29a9e823cf1d6c764323d7e15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
其中正确的个数是
A.3 | B.2 | C.1 | D.0 |
您最近一年使用:0次
2018-11-08更新
|
1612次组卷
|
4卷引用:河北省保定市2019届高三10月摸底考试数学(理)试题
3 . 设
是定义在正整数集上的函数,且
满足:“当
成立时,总可以推出
成立”,给出以下四个命题:
① 若
,则
;② 若
,则
;
③ 若
,则
;④ 若
,则
.
其中真命题的个数为( )个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabfa1a31424c502f92f5cf0ad6ec8a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66188cb95eab488d29731b9b3a3ca116.png)
① 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352a0a69af9dd5cb27fba64748e0c7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5562e92b2c718e87ad382d1e55fb3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802f73a4c7c3a55335816e8322120313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2ef85d790417e8e770677e75ed0001.png)
③ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5c11e0fda803839041cce6eb1861a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669bdb92b3bdbc6754ce847a36427fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d7b012f528e03d2f07604b312a70a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394420e6dfcb3d81dbaa98a920afc359.png)
其中真命题的个数为( )个
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2014·上海闵行·二模
名校
4 . 对于函数
,有下列4个命题:①任取
,都有
恒成立;②
,对于一切
恒成立;③函数
有3个零点;④对任意
,不等式
恒成立.则其中所有真命题的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9483cdecf2b3ad69dd985b9140154a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5182a8b74c894231021e20380f864fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59554ee8b854e90a459d27524b5003df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5932ee430d9867cb72cc306b53efd15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b916c6d3fb2fdc67421489f207c93903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2419b1e277ee683ac59e59289109bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092f763f0747470bfce68e67594a316b.png)
您最近一年使用:0次
2019-12-27更新
|
1185次组卷
|
12卷引用:2014届上海市闵行区高三下学期教育质量调研(二模)文科数学试卷
(已下线)2014届上海市闵行区高三下学期教育质量调研(二模)文科数学试卷2015届四川省宜宾市高三第一次诊断考试理科数学试卷2015届四川省宜宾市高三第一次诊断考试文科数学试卷2016届江西省临川区一中高三上学期第一次月考理科数学试卷2016届江西省临川区一中高三上学期第一次月考文科数学试卷2017届江西玉山县一中高三上月考二数学(理)试卷(已下线)2018年高考二轮复习测试专项【新课标理科】热点一 分段函数的性质、图象以及应用(已下线)2018年高考二轮复习测试专项【新课标文科】热点一 分段函数的性质、图象以及应用湖北省黄冈市浠水县实验高级中学2019-2020学年高三上学期8月月考数学(理)试题宁夏石嘴山市第三中学2017届高三上学期期末数学(理)试题四川省成都市第七中学2022届高三下学期三诊模拟考试数学(理)试题四川省眉山市东坡区眉山北外附属东坡外国语学校2023届高三下学期开学考试理科数学试题
名校
5 . 已知函数
的图像是一条连续不断的曲线,若
,
,那么下列四个命题中
①必存在
,使得
;
②必存在
,使得
;
③必存在
,使得
;
④必存在
,使得
.
真命题的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23823554806b4580cb0800b5cda92047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf86e1373a8e538cf02933cc9892330.png)
①必存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0477a81cc12312d3e466058715c544c8.png)
②必存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6dc849ba5177d89b4c874ed20b53566.png)
③必存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6fcdc2fba5c608aec42c47d5253ef32.png)
④必存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b17015905892e3fcabe94f25efcb14.png)
真命题的个数是
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 下列命题中,真命题的个数是
①已知直线
:
,
:
,则“
”是“
”的充要条件;
②“若
,则
”的逆否命题为真命题;
③命题“若
,则
”的否命题是“若
,则
,
至少有一个不等于
”;
④命题
:
,
,则
:
,
.
①已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026f3c0e78075258f22269633c39ae6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15fec8c1b6d6df6c6ffa62739ca66e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0db2c49919467a2e14540f2aabd05cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
②“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91bcddc2ece6bcde9355e222e1cf9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
③命题“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb20e291772c2614ad19f4cc919dfec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657435e1fda84118e7f63c97505c8b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a68dbd91d6de68b550a5745ecd461d9.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/c95b6be4554f03bf496092f1acdfbb89.png)
④命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52805938232a4b74d8b483bb68288c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f335b6c41105b0e43a9be26245a1c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946c1b698c7ed9cc63de98790fde706f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afbb641435fa1ccbc74fb64cc87f630.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 我国古代太极图是一种优美的对称图.如果一个函数的图像能够将圆的面积和周长分成两个相等的部分,我们称这样的函数为圆的“太极函数”.下列命题中错误 命题的个数是
对于任意一个圆其对应的太极函数不唯一;
如果一个函数是两个圆的太极函数,那么这两个圆为同心圆;
圆
的一个太极函数为
;
圆的太极函数均是中心对称图形;
奇函数都是太极函数;
偶函数不可能是太极函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bf85fe3237bb6aaa3efa64600db30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53ffa4b8a693dbd47a1139789ed5f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c789f44c21a9a5e280e8fc32a4aede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc402596519b2218ce62bfee521e2f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306d7a14a1cdc5f162aa061016e5470a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41c2953aa26f0ebf94f3a28005ef39f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411a350613f5f45ceb57c29fbc3bb66b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8e9af18b5f70f92b7ef70090981f99.png)
A.2 | B.3 | C.4 | D.5 |
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8 . 设函数
,其中
,
.若
,
,
是
的三条边长,则下列结论正确的是_________ .(写出所有正确结论的序号)
①
,
;
②
,使
,
,
不能构成一个三角形的三条边长;
③若
为直角三角形,对于
,
恒成立.
④若
为钝角三角形,则
,使
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4646d85a87c6e7979890442d80bb916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d508536d0c182db3e7f81a919793de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6996c86f28de1714e1ccd1c4f77aaa51.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/0faed94a64b2dcfc6801b4fca0f16675.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/692034be0e1014f1e8f815905534f042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/035d9b57dea73c98cf7fdc56ea481c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922f60085d6736463d1d14270d30905e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f14c14797d56a27947477c7a8cd246.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac657ea5bbf4b237a30e4074c76cc81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819b11c8e59a08827bd5039cfbb769b0.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ec224b50ac0247a6e9d4c4422181b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f34d440343370918f1e4d6770bcc2a.png)
您最近一年使用:0次
9 . 给出下列四个命题:
①“若
为
的极值点,则
”的逆命题为真命题;
②“平面向量
,
的夹角是钝角”的必要不充分条件是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9344f82269af22049dae76cb38c9debf.png)
③若命题
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99de6c1b54e0efa27a6de0afa326c623.png)
④命题“
,使得
”的否定是:“
均有
”.
其中不正确的个数是
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53c8eaafc8f635a4e3c6e0cc6c4a6e2.png)
②“平面向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9344f82269af22049dae76cb38c9debf.png)
③若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88a616c3565527cb4a170cf55ee75f44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99de6c1b54e0efa27a6de0afa326c623.png)
④命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0c7a319f1fb9ef4cd6bd9eb5ab0c53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ef6ac3a5f1358143e94eb31f6687d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1c77d129b56255baf3d76eb2a6c2ff.png)
其中不正确的个数是
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
2017-08-30更新
|
2048次组卷
|
3卷引用:江西省(宜春中学、丰城中学、樟树中学、高安二中、丰城九中、新余一中)六校2018届高三上学期第五次联考数学(理)试题1
10 . 给出下列结论:
①集合
的子集有 3个;
②函数
的值域是
;
③幂函数图象一定不过第四象限;
④函数
的图象过定点
;
⑤若
成立,则
的取值范围是
.
其中正确的序号是________________ .
①集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e449960f4e986c1ed259cd2f7eef553.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ebdec701dac44b2dd8ce2fa49c10f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
③幂函数图象一定不过第四象限;
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd809c231251dcd0e5ca8d2c8eb2a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe8803bc5d850ec2a6f15bcdb12c896.png)
⑤若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f679d2bd708c86a5812bea359fb15f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b419a704616921ef37f2b4cf9e582b.png)
其中正确的序号是
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