1 . 已知符号函数
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316edc66da4154429f659bc88c47766c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e32fdcfc477c4e183477e58a9d3ad3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
A.充要条件 | B.充分不必要条件 |
C.必要不充分条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2 . 已知全集
,集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b00d78aaf2acacd29e9463382485d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c988d674156ea47cf0befbc19323c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb672fad95c619b67f7756a77416b40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9483e122e2b8b02794ce03405ba48a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
3 . 在平面直角坐标系
中,已知抛物线
和点
.点
在
上,且
.
(1)求
的方程;
(2)若直线
与
相交于
两点,
与
相交于
两点,直线
的斜率分别为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49d045dbe7809b0d3f423e481d9f3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd813a0d9662cd3b96d99e12b34ec234.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4bc45ba4c2ad98835bfdd40c2212ba9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82feac6a2168b3cc1ddeebb88e1f3f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c65902e35640cf2c8d4111c36b40145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5daf9b772660af2af01d8cb179f32ba.png)
您最近一年使用:0次
2024-02-18更新
|
119次组卷
|
2卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测文科数学试题
解题方法
4 . 若
,
满足约束条件
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd5727081b591940f673a41d1dd40ec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aba3f06a47c86b096f284cde5270594.png)
A.4 | B.3 | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-18更新
|
131次组卷
|
4卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题
5 . 如图,在四棱锥
中,
平面
,
,
,
,
为棱
上的一点,且
.
(1)证明:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10c83f8945042b9c8fb2fbdac9308d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4afcd7f0838dd142350074ba86b1277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150256df998204e428016dcc9cbe8b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d67e50b06d24ce0284a89909bc395e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/a382b335-fbd8-4826-a9e7-648a6bfa5c62.png?resizew=170)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a829577bb0863d3f39db38ca4c179a56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5082fa0f36a008dc2838146ea2bf2e1b.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4294b7141d394654841008ac9b40dab.png)
您最近一年使用:0次
2024-02-18更新
|
161次组卷
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2卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题
解题方法
6 . 如图,已知
,
为平面
外一点,
,点
到
两边
,
的距离分别为
,
,且
,则点
到平面
的距离
为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/40899b04-afea-4e51-9c3b-5705d69761c2.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745e0525a41fe2e2a7739c75a942290b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774716ee75451fefa132e327b15e601b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda40d4d62aa28f9e5f877bbea5ce511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c157ff302a881c17514534903c575f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b37b2492faf1e8f9af804775c8c9735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745e0525a41fe2e2a7739c75a942290b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/40899b04-afea-4e51-9c3b-5705d69761c2.png?resizew=142)
A.4 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2024-02-17更新
|
182次组卷
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4卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题
解题方法
7 . 函数
的图象大致是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82607095c4c2fc36f8e30aa2afc019d2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-02-17更新
|
326次组卷
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4卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题
解题方法
8 . 为了鼓励学生积极锻炼身体,强健体魄,某学校决定每学期对体育成绩在年级前100名的学生给予专项奖励.已知该校高三年级共有600名学生,如图是该年级学生本学期体育测试成绩的频率分布直方图.据此估计,该校高三年级学生体育成绩的中位数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/87e58a6b-a036-447c-bdf4-9053a6cf848c.png?resizew=223)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/87e58a6b-a036-447c-bdf4-9053a6cf848c.png?resizew=223)
A.70 | B.70.5 | C.71.25 | D.72 |
您最近一年使用:0次
2024-02-17更新
|
238次组卷
|
4卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题
9 . 在直角坐标系
中,曲线
的参数方程为
为参数
,
(1)写出
的普通方程,并指出它是什么曲线;
(2)以坐标原点为极点,
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
,求
与
交点的极径与极角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed4e17e355f848096537fdb408eae34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)以坐标原点为极点,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9d5a620b1214d121cd4d9c3654d1f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
您最近一年使用:0次
2024-02-12更新
|
173次组卷
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4卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题
解题方法
10 . 若双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd14483e3bc5f2bf4774d6f83fe7331.png)
的一条渐近线被圆
所截得的弦长为2,则双曲线
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd14483e3bc5f2bf4774d6f83fe7331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d3f9d8344e1c727fbbed5421daaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c52ae4f01e98276ec3cf114ef15861.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2024-02-12更新
|
252次组卷
|
4卷引用:内蒙古自治区锡林郭勒盟2023-2024学年高三上学期1月期末教学质量检测理科数学试题