1 . 复数
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bbeaee42a6d540aefcb012808e5a28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de971553ea8a66d7849b138a4a0625c5.png)
A.1 | B.![]() | C.2 | D.![]() |
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2 . 已知幂函数
的图象关于原点对称.
(1)求实数m的值;
(2)设
,(
且
),若不等式
对任意
恒成立,求t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfad69280555ca5f9aa904496b924ffb.png)
(1)求实数m的值;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f87b41eab59a0f9807c01a6d7e5e840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a369ce3949b2bd2747a48054f7b951c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa38ca27c6c0c40d5e36b2ae4fb7ba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
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3 . 已知函数
,若方程
有四个不同的实根
,且满足
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94310218f8f9d987d6ef44c3dd12a07a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bfd07ab815c3947383ebcffcc30ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
A.实数a的取值范围是![]() |
B.![]() |
C.![]() ![]() |
D.![]() ![]() |
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解题方法
4 . 函数
的部分图象可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c53c7183b2fdf4b5ff87ed05382e873.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 如图,在三棱柱
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/c7e4b942-6b27-4786-a3aa-48b116e85f84.png?resizew=157)
(1)求证:
平面
;
(2)若
,直线AB与平面
所成的角为
,求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4759c765972e2e039b295a0d0d4fc840.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/c7e4b942-6b27-4786-a3aa-48b116e85f84.png?resizew=157)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900e00a3609e6043af1034761d4d65f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05ab602944bedd4fe63d0575178dfdb8.png)
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解题方法
6 . 设抛物线
的焦点是
,点
是抛物线上的动点,且点
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18e9b80fdeaa8bd3cf97b3c214448f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508734095955bb96d52f37be4e681700.png)
A.![]() | B.4 | C.![]() | D.5 |
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7 . 万众瞩目的北京冬奥会于2022年2月4日正式开幕,是继2008年北京奥运会之后,国家体育场(又名鸟巢)再次承办奥运会开幕式. 在手工课上,王老师带领同学们一起制作了一个近似鸟巢的金属模型,其俯视图可近似看成是两个大小不同,扁平程度相同的椭圆,已知大椭圆的长轴长为
,短轴长为
,小椭圆的长轴长为
,则小椭圆的短轴长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86cacebfac933f2d9894147286bdd4a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e476067ee83f0666b74ef0576567c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e476067ee83f0666b74ef0576567c7d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/9094c30c-5cfd-44a9-a731-111919432712.png?resizew=153)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
8 . 已知
为坐标原点,双曲线
:
(
,
)的左、右焦点分别为
,
,离心率为
,
为双曲线
上一点,
平分
,且
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8f7e40ba386c0a9675896b52752d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22a3c7e465a61e9849dd223261be47c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee06b900fb34f246b0b310a3127fb96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f1431ccaf43d79e0ba0ab90363c5d7.png)
A.双曲线![]() ![]() | B.![]() |
C.双曲线![]() ![]() | D.点![]() ![]() |
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9 . 已知集合
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b48b02cd5869cea5d930ea63fc3a114.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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10 . 如图,直线
经过抛物线
:
的焦点
,与抛物线
交于点
,与准线交于点
,且
,则直线
的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6d8eaacc2d999b37209feba103f9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0593fe41c9f86258ecc537885c2ec82a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/f72797df-2ea5-47f7-af20-d1f121f4f542.png?resizew=121)
A.![]() | B.2 | C.3 | D.![]() |
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