1 . 已知四面体
中,
,且
与平面
所成的角为
,则当
时,
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8c3e673f6942831b8431e44409689f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68f31592afa0f6735b29d6c616ff567c.png)
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2 . 已知平面上两点M、N之间的距离为6,动点P满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07e95e6c748573d9102e7654b34ca6f.png)
A.动点P的轨迹长度为![]() |
B.不存在满足![]() ![]() |
C.![]() ![]() |
D.当P、M、N不共线时,![]() |
您最近一年使用:0次
3 . 已知双曲线
过点
且与双曲线
共渐近线,直线
与双曲线
交于
,
两点,分别过点
,
且与双曲线
相切的两条直线交于点
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf2e8a06060f3e664b3f51a3fdfe8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14f8ae565db8a7d4b95fdd85e28afa2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.双曲线![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若点![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-11-19更新
|
372次组卷
|
5卷引用:四川省德阳市德阳中学校2023-2024学年高二上学期11月月考数学试题
四川省德阳市德阳中学校2023-2024学年高二上学期11月月考数学试题山西省吕梁市2023-2024学年高二上学期11月期中数学试题(已下线)模块三 专题2 小题进阶提升(4) 期末终极研习室(高二人教A版)山西省大同市第一中学校2023-2024学年高二上学期12月月考数学试题山西省大同市第一中学校2023-2024学年高二上学期12月月考数学试题
名校
4 . 已知经过点
的椭圆
的上焦点与抛物线
焦点重合,过椭圆
上一动点
作抛物线
的两条切线,切点分别为
.
(1)求
和
的方程;
(2)当
在椭圆
位于
轴下方的曲线上运动时,试求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a50d837c971e96e8c67d81838e5a893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cd274be8acd820404b445523d0b3d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ef27c7bdf234b2dc0f5941cc6ebd9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e8c7968d57d2a20065a7cb15c9b4eb.png)
您最近一年使用:0次
2023-07-18更新
|
712次组卷
|
2卷引用:四川省德阳市2022-2023学年高二下学期期末数学理科试题
5 . 已知函数
有两个互为相反数的极值点
,且
,则下列说法正确的是( )
①
;
②
必存在最小值;
③若
有唯一一个整数解,则
的取值范围为
;
④若存在两个不相等的正数
,使得
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77241c5c8f271ed707484d98a56499a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c8c296108fe7875d7c0a072d6d9446.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600379d4a993514aaaeed551de58293a.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a042d484f08d3c92044913367d3e09b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d223b1575c304c0572d3a8e8ac541c2.png)
④若存在两个不相等的正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca31577dd76afbc1b720cdcad88ffd16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1955e99004ea1232eef1669da296545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b2c030ad85dc6ba6ac1ffde14758655.png)
A.①②③④ | B.①②③ | C.①③④ | D.①②④ |
您最近一年使用:0次
名校
解题方法
6 . 十字测天仪广泛应用于欧洲中世纪晚期的航海领域,主要用于测量太阳等星体的方位,便于船员确定位置.如图1所示,十字测天仪由杆AB和横档CD构成,并且E是CD的中点,横档与杆垂直并且可在杆上滑动.十字测天仪的使用方法如下:如图2,手持十字测天仪,使得眼睛可以从A点观察.滑动横档CD使得A,C在同一水平面上,并且眼睛恰好能观察到太阳,此时视线恰好经过点D,DE的影子恰好是AE.然后,通过测量AE的长度,可计算出视线和水平面的夹角
(称为太阳高度角),最后通过查阅地图来确定船员所在的位置.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/f340736c-a23f-4b3e-a3ef-710244b4e922.png?resizew=359)
(1)若在某次测量中,横档
的长度为20,测得太阳高度角
,求影子AE的长;
(2)若在另一次测量中,
,横档
的长度为20,求太阳高度角的正弦值;
(3)在杆AB上有两点
,
满足
.当横档CD的中点E位于
时,记太阳高度角为
,其中
,
都是锐角.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/2/f340736c-a23f-4b3e-a3ef-710244b4e922.png?resizew=359)
(1)若在某次测量中,横档
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b528818e98c5c2ddf301048b4228d2.png)
(2)若在另一次测量中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0e847821c95966efc534f26fbe4f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)在杆AB上有两点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2059d1b10017e04aa35812c0354049b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e819b87f90651d89fcd258c276294e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafc046509e3ca71090d8a1de862efa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e29bf5652f0d4f764c3606efcdb445f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadb2357b7a648d3a69c7a84dbdffcc0.png)
您最近一年使用:0次
2023-04-26更新
|
1485次组卷
|
6卷引用:四川省德阳市德阳中学校2022-2023学年高一下学期5月月考数学试题
名校
解题方法
7 . 已知
为奇函数.
(1)求
的值;
(2)若
,
,求
的值;
(3)当
时,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91c52724c5ab0d36c22d84e1670caf7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da256819b7a7f15c1c1ae32c3b8c9193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96119cc3005adf559140161bd872143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6c487eb2719ca41ee5ab54701e29b3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5cf9c12181dd8683944b2b30bf8e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4a4cfb52d401764105135cd21d6568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdbc4174e43957bd666d2467faced6e2.png)
您最近一年使用:0次
2022-06-14更新
|
1102次组卷
|
3卷引用:四川省德阳市2020-2021学年高一下学期期末数学试题
解题方法
8 . 已知点
是
轴上到
距离和最小的点,且
,则
的值为______ (用数据作答).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96bdb666d09b92d3c6e87e00e5790a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15ed1de45e354f46bfd258cc465e6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae25acf5cbde326691cb75cb68cd788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e226f35250d668d3006217046f340ed9.png)
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