名校
1 . 下列说法正确的序号为( )
①若
,则
;
②若
,则
;
③若a>b,c>d,则
;
④若
,c<0,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288420f0b137ec90d963e6b5db65fe30.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a44d971fdc197191b4a7c2b3716e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa8950fa963eedb948d6a57871478cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125415eb6733489cdc96ee48eb88aee7.png)
③若a>b,c>d,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f50ce6b511e6b928796e048fc7fa5c.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288420f0b137ec90d963e6b5db65fe30.png)
A.①② | B.②③ | C.①④ | D.③④ |
您最近一年使用:0次
名校
2 . 高斯函数
是用德国著名的数学家高斯的名字命名的,即设
,用
表示不超过
的最大整数,例如
,
.已知函数
,有下列四个结论:①
;②
在
上单调递增;③
的最小值为0;④
没有最大值,其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7179c645736d68c90023f83d7f11ed01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985227b7b4703f3ed8717d0abc4febfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec13b2c5950301683e240faf02340617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e86444c5514b63b441f29c0f511750a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956cd0c33242381c2f977ab7b0435448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.①②③ | B.①③④ | C.①④ | D.①② |
您最近一年使用:0次
2024-04-08更新
|
203次组卷
|
2卷引用:山西省大同市第二中学校2023-2024学年高一下学期3月月考数学试题
20-21高二·江苏·单元测试
解题方法
3 . 以下几种说法
①命题“∃a>0,使函数f(x)=ax2+2x﹣1只有一个零点”为真命题
②命题“已知x,y∈R,若x+y≠3,则x≠2或y≠1”是真命题
③“x2+2x≥ax在x∈[1,2]恒成立”等价于“对于x∈[1,2],有(x2+2x)min≥(ax)max”
④△ABC的内角A,B,C的对边分别为a,b,c,则“a>b”是“cos2A<cos2B”的充要条件.
其中说法正确的序号为( )
①命题“∃a>0,使函数f(x)=ax2+2x﹣1只有一个零点”为真命题
②命题“已知x,y∈R,若x+y≠3,则x≠2或y≠1”是真命题
③“x2+2x≥ax在x∈[1,2]恒成立”等价于“对于x∈[1,2],有(x2+2x)min≥(ax)max”
④△ABC的内角A,B,C的对边分别为a,b,c,则“a>b”是“cos2A<cos2B”的充要条件.
其中说法正确的序号为( )
A.①③ | B.①④ | C.②③ | D.②④ |
您最近一年使用:0次
4 . 已知函数
,
,
为
图象的一个对称中心.现给出以下四种说法:①
;②
;③函数
在区间
上单调递增;④函数
的最小正周期为
.则上述说法正确的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bb5b70e41a4ace7b016706b13bcece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c9168200e6089ab8b7c203078025e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c84e2a02b32a01b13d65e5e9c4554c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce0dc28340738e090bd10d6d675d8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a467ddaa138590b3b56615c2c42a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17969ef32066458222c0c74a4bb896b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
A.①④ | B.③④ | C.①②④ | D.①③④ |
您最近一年使用:0次
解题方法
5 . 设向量
,
,当
,且
时,则记作
;当
,且
时,则记作
,有下面四个结论:
①若
,
,则
;
②若
且
,则
;
③若
,则对于任意向量
,都有
;
④若
,则对于任意向量
,都有
;
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ec6dba44a83ae69146c26a2eec325c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66717aa3e7a771427c1d4433c77a5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7104776ff89344dbad71ae372b2c6a1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0988c92311bffdfb634de896a2b2fd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421a7d6f54bf58a7a4f4ce61e06aefa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3e9895c7436c5ea1c3ac47c596c45e.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd20ae9a1de8e0b2d2e862f54d2fa5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6761671da84d62ef7257cd5461dc3ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3e9895c7436c5ea1c3ac47c596c45e.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb06d2c5e7b37ab793a0f37725fdd91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8d4daca693685ceff6906a4c79ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca8f9fc8661c6fffcfd76c070bcc0b18.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0988c92311bffdfb634de896a2b2fd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad06686d57e77ae6890e530e40c89726.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3e9895c7436c5ea1c3ac47c596c45e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfbdbb27c06740921709722585131fe.png)
其中所有正确结论的序号为( )
A.①②③ | B.②③④ | C.①③ | D.①④ |
您最近一年使用:0次
名校
解题方法
6 . 数列
的前
项和为
,若数列
与函数
满足:
(1)
的定义域为
;
(2)数列
与函数
均单调递增;
(3)
使
成立,
则称数列
与函数
具有“单调偶遇关系”.给出下列四个结论:
①
与
具有“单调偶遇关系”;
②
与
具有“单调偶遇关系”;
③与数列
具有“单调偶遇关系”的函数有有限个;
④与数列
具有“单调偶遇关系”的函数有无数个.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(2)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0402d106366846ca9f34de39fa4338fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd70bc89bcebe10b16931b1e654d211.png)
则称数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff1c33b81ac2f065d37faef37504bb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a18ca67c2770b98f36dbfd802595a95.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4b5779873cb3f4366dbfdb983dec81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d087d57ecfdb9979a7c187f8b009bea7.png)
③与数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d59e423e1dd1a49b0b6670041321c73.png)
④与数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a97e99f49ad1998d2858e1963aa45de.png)
其中所有正确结论的序号为( )
A.①③④ | B.①②③ | C.②③④ | D.①②④ |
您最近一年使用:0次
2024-04-29更新
|
168次组卷
|
2卷引用:北京市海淀区北京一零一中2023-2024学年高二下学期期中考试数学试题
解题方法
7 . 已知函数
的最小正周期为
,给出以下结论:
①
在区间
上的值域为
;
②
在区间
上单调递减;
③将
的图象向左平移
个单位长度,所得图象对应的函数
为偶函数;
④
在区间
内的所有零点之和为
.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ce723544931d74e4c800b947ab9176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592adec197b57a7a9695e358199f1180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3407bce8ef91b09ef5f75714ed3e6a5e.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb935734bfd51c3338f223934a668e29.png)
③将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca83bfb0e8dd7435711711f1a209ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d91a5d6489c77f68da4024051762e74.png)
其中所有正确结论的序号为( )
A.①③ | B.②④ | C.②③④ | D.①②④ |
您最近一年使用:0次
解题方法
8 . 给出下列命题
(1)命题“
,
”的否定是“
,
”
(2)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b804002ee3d72ff947cfc8426f90047c.png)
(3)已知
,
,若
,则a的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a568a870b0c247e1abaf4bf65b83865.png)
其中正确命题的序号为( )
(1)命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9490565d4714ffcbadb26fdfca443856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccd7af9298cd5ff19d8866fedb42ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9490565d4714ffcbadb26fdfca443856.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b804002ee3d72ff947cfc8426f90047c.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0820285d82c98efc92ee43db58418fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f4cde12869125b1eebc2c6c8ae22cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f1ba0a1129741502600e47bf058c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a568a870b0c247e1abaf4bf65b83865.png)
其中正确命题的序号为( )
A.(2)(3) | B.(2) | C.(1)(3) | D.(1)(2) |
您最近一年使用:0次
9 . 关于下面演绎推理:
大前提:指数函数均为单调函数.
小前提:
是指数函数.
结论:
是单调函数.
下列表述正确的是( )
大前提:指数函数均为单调函数.
小前提:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93eb7f6b803ac8e1e3b9def53134f966.png)
结论:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93eb7f6b803ac8e1e3b9def53134f966.png)
下列表述正确的是( )
A.大前提错误导致结论错误 | B.小前提错误导致结论错误 |
C.推理形式错误导致结论错误 | D.此推理结论正确 |
您最近一年使用:0次
2022-07-07更新
|
222次组卷
|
2卷引用:河南省南阳地区2021-2022学年高二下学期期终摸底考试文科数学试题
10 . 如图,菱形ABCD的对角线AC与BD交于点O,EF是
的中位线,AC与EF交于点G,已知
是
绕EF旋转过程中的一个图形,且
.给出下列结论:
平面
;
②平面
平面
;
③二面角
的平面角是直线OP与平面ABCD所成角的2倍.
其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e047b07e4609bea2232e2cbe8435940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
②平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
③二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29f8c417f5c19cc076dc6baeb0c173a9.png)
其中所有正确结论的序号为( )
A.①②③ | B.①② | C.①③ | D.②③ |
您最近一年使用:0次
2024-03-27更新
|
648次组卷
|
4卷引用:四川省遂宁市2024届高三第二次诊断性考试数学(理)试题
四川省遂宁市2024届高三第二次诊断性考试数学(理)试题四川省雅安市2024届高三下学期二诊数学(理)试题四川省乐山市2024届高三第二次调查研究考试数学(理科)试题(已下线)第13章 立体几何初步(提升卷)-重难点突破及混淆易错规避(苏教版2019必修第二册)