解题方法
1 . 已知圆锥
的高等于底面半径r,则圆锥
与半径为r的球的表面积之比是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
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2 . 椭圆
经过双曲线
的焦点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81cde89a668563d25b404c15b8f0bb9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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解题方法
3 . 函数
的最小正周期是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/136506c61e8ce2cae1395e06988dd642.png)
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4 . 已知实数x,y满足约束条件
该约束条件在坐标平面上表示的区域如图所示,则y的取值范围是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/a25a596f-990c-42ae-b700-27330a5c745b.png?resizew=132)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269d1ab550e3f6572138f6ba0227c6be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/22/a25a596f-990c-42ae-b700-27330a5c745b.png?resizew=132)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 已知随机变量
服从正态分布
,
.记
的密度函数为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcc248a7770a16fa10fc4602d71e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2169ec0c1c1e51c4925771d6897f08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d074d1ac65dc6d92564c501ef344cb73.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
6 . 设双曲线
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c56109d9e87fe7349baa26b0e130ed4.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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解题方法
7 . 数列
满足
且
,
,
,
构成等差数列.
(1)试求出所有三元实数组(α,β,γ),使得
为等比数列.
(2)若
,求
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f390f47fa5678c9a165c50fb9dec58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be536a2097ded867adac5edebb79906b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e6820c50fa2aa589de5331d7d5f950.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13739ca823d61005798cc3298400c6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad28237c0f9ca65341101d9d7e73e73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee766a75ae9ee290e403b42b3569db6.png)
(1)试求出所有三元实数组(α,β,γ),使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee766a75ae9ee290e403b42b3569db6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4623bc660145c6ff98af7b1753d5357a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee766a75ae9ee290e403b42b3569db6.png)
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8 . 设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176bf1f7402b32bddd0c38e081fc79f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)若
,讨论
的单调性;
(2)若
,求
的最大值(用
表示);
(3)若
恰有三个极值点,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176bf1f7402b32bddd0c38e081fc79f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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9 . 设双曲线Γ:
,
,B,C在Γ上且直线
经过A.设
分别为Γ在B,C处的切线,点D满足
,则D的轨迹方程是___________ ;若D的横纵坐标均为正整数,且二者之和大于2024,则D可以是_____ .(写出1个即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3674d64026a371b001453280477ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86de0e038b0304e34ca8c9b117fec917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e6aa92080d4e1f43a1ac2f9c2965fe.png)
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10 . 有n个进程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd432e2abf32a492b87a64728b2f57a5.png)
,
,···,
要访问一个数据库,不同进程之间、同一进程在不同时刻是否尝试访问数据库是相互独立的,且每一秒每个进程尝试访问数据库的概率均为
.若某一秒恰有一个进程访问数据库,则访问成功,否则访问失败.以下是一个
的样例:
记
为
在前t秒成功访问数据库的次数,
为自然对数的底,[x]表示不小于实数x的最小整数,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd432e2abf32a492b87a64728b2f57a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b189a68f49f2f2523bdace15ea697b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b598b17985f56a065a175ffbbed9325.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d6b5d9ac4b06959e2ff16e4d4902a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44af93bcccbb92a89f131a753e4cde86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a50b36a56f772e8d14c8fbc32f098300.png)
序号/时刻 | 第1秒 | 第2秒 | 第3秒 | 第4秒 | 第5秒 | 第6秒 | 第7秒 | |
![]() | ✔ | ✔ | ✔ | |||||
![]() | ✔ | ✔ | ✔ | |||||
![]() | ✔ | ✔ | ||||||
![]() | ✔ | |||||||
访问结果 | ![]() | ![]() | 失败 | ![]() | 失败 | 失败 | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccb44fae126ae89eb8a47c8c2da15c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69cd3b917458d402b81411600d46cea5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
A.若n=4,则![]() | B.![]() |
C.![]() | D.![]() |
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