1 . 已知抛物线
:
,且过焦点
的直线与抛物线
交于
、
两点,若以
为直径的圆与
轴交于
和
两点,则直线
的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0e705301752424a492f6277ed7774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edaef66a0582e95fb5c57a405acdea9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2 . 在棱长为1的正方体
中,
为平面
上一动点,下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
A.若点![]() ![]() ![]() ![]() |
B.存在无数多个点![]() ![]() ![]() |
C.将![]() ![]() ![]() |
D.若![]() ![]() |
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解题方法
3 . 已知椭圆
:
(
)的离心率为
,点
是
上一点,
,
分別是两个焦点,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7f12ef3d9b10299421cb66327293ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/b42fc33bcfc63ec2f4940ccd3f862400.png)
A.![]() | B.![]() | C.16 | D.32 |
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4 . 如图,在四面体
中,点
是棱
上的点,且
,点
是棱
的中点.若
,其中
,
,
为实数,则
的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/59f9115f-9062-480a-a43c-93d68b34eaa6.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa9c3b0d19ae046b55ca748249969a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f92d8955af0ae0f395c0ff4be872b84.png)
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/59f9115f-9062-480a-a43c-93d68b34eaa6.png?resizew=150)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知集合
,集合
.
(1)若
,求
;
(2)若集合
满足条件:①
;②
;③
是
的必要条件.从以上三个条件中任选一个,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4ea1a902d2bd859682cf8d43b0b0d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/562d8d9804d29f6f8ab748d8ae571af2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ded1bbe3d800c5e785c2e59e57f862.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9d50619b779c1056602f46b2a95e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
6 . 已知
是奇函数,
是偶函数.
(1)求
的值;
(2)若不等式
恒成立,求
时实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092e40a1ec1a58a6ef28557db5ba8056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fa78af600f792da4ed72e862683cc4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25d1cfbdeeb6ad949cc2970a1299e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7 . 已知函数
.
(1)求函数
的最小正周期及单调递减区间;
(2)求函数
在区间
上的最大值、最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc84fc7a501d15dc107950120af91b7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba7039324a6d810f4d5603d4edeb70e.png)
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解题方法
8 . (1)计算
.
(2)某工厂生产一种溶液,按市场要求杂质含量不得超过
,而这种溶液最初的杂质含量为
,现进行过滤,已知每过滤一次杂质含量减少
,求使产品达到市场要求的过滤的最少次数(参考数据:
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c606ca9e345453d1ea7739ecdf66491b.png)
(2)某工厂生产一种溶液,按市场要求杂质含量不得超过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe619bd93756ad8656ba0d02c4fddca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b971b2c43a814d35dfe0c1be4c45d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc146f4d7196cfb8fe3cd04575f5dcee.png)
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解题方法
9 . 将函数
的图象向右平移
个单位,再将横坐标伸长到原来的2倍,纵坐标不变,得到函数
的图象,则函数
的解析式是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fafa6d6a3c4273a9da9d51c3ab0ed9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
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解题方法
10 . 函数
的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a250422b1ac13493bb5ac71d382152a.png)
您最近一年使用:0次