1 . 已知平面向量
.若对区间
内的三个任意的实数
,都有
,则向量
与
夹角的最大值的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed59c3fed4ad4c1ceb99f599fb730aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d51d9c50590e4f4484e7558ecd38c5f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096820d860ddf8f3155bf36f5fded491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbed5f86a6f7daf451d6733f0d845acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2868a9fe011f56a80c9d1a8ee4604d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71c904ee4abaaf0e4f8768480416918.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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浙江省台州市2022届高三下学期4月教学质量评估数学试题(已下线)秘籍07 直线与圆-备战2022年高考数学抢分秘籍(全国通用)(已下线)重难点11九种直线和圆的方程的解题方法-2安徽省滁州市定远县民族中学2021-2022学年高三下学期期中考试数学(理)试题
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解题方法
2 . 数列
满足
,
.
(1)求
的通项公式;
(2)若
,求数列
的前20项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5003dc832af7c9fea2af46ebb1bf79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee41286d35b154f9a4940d455719ebf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a27c112387e56c976489fa484c0d48f.png)
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解题方法
3 . 若实数x,y满足约束条件
则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5fb4a669ed5d2ac74bf29f4addf470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7c99486743e17633d086d868f0680c.png)
A.1 | B.2 | C.4 | D.6 |
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4卷引用:浙江省嘉兴市2022届高三下学期4月教学测试(二模)数学试题
浙江省嘉兴市2022届高三下学期4月教学测试(二模)数学试题浙江省金华市曙光学校2022届高三下学期5月模拟数学试题(已下线)临考押题卷04-2022年高考数学临考押题卷(浙江卷)西藏自治区拉萨中学2021-2022学年高二下学期第六次月考数学(文)试题
4 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d66f9ff763942b47d03dce67c10d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7daf037e820b45da5b5d27cd601f3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e60375f97ff7854f4d3a8b1108d2e3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 某几何体的三视图如图所示(单位:
),则该几何正视图体的表面积(单位:
)是( )
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962974686560256/2964503703756800/STEM/e24c33c0-6b31-4d19-8bfa-f6f509edd064.png?resizew=172)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962974686560256/2964503703756800/STEM/e24c33c0-6b31-4d19-8bfa-f6f509edd064.png?resizew=172)
A.17 | B.18 | C.19 | D.20 |
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解题方法
6 . 已知
(
为虚数单位),则复数
在复平面内对应的点位于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/197a462a937459f142bfc0d7ead628d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
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4卷引用:浙江省嘉兴市2022届高三下学期4月教学测试(二模)数学试题
7 . 如图,在四棱锥
中,底面
是等腰梯形,
,
,且
.
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962974686560256/2964503704879104/STEM/fca9b67eec1941d89ab1b479172e04f4.png?resizew=205)
(1)证明:
;
(2)若E为
中点,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4aa43d2e64e857267e706e1f50f5c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da48240e7fc3248f773ac1500c15ec14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5e661e2474041594cb1320988103bc.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962974686560256/2964503704879104/STEM/fca9b67eec1941d89ab1b479172e04f4.png?resizew=205)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90197a948331e61db644266368017e3.png)
(2)若E为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
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8 . 在锐角
中,
,
,点D在线段
上,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad6295313e59c3e6f053fbfec5ca9d1.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee63d7a67287c5254793609eef77f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59802bde1dc59ba9000157b08463b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7650cede07c4758a9b3bb1da4553acc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad6295313e59c3e6f053fbfec5ca9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
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浙江省嘉兴市2022届高三下学期4月教学测试(二模)数学试题浙江省金华市曙光学校2022届高三下学期5月模拟数学试题(已下线)临考押题卷04-2022年高考数学临考押题卷(浙江卷)七省联考2024届高三考前数学猜想卷(一)
9 . 设a,
,若
时,恒有
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c93c733c32ff5e8083b2f8b359a96c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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浙江省嘉兴市2022届高三下学期4月教学测试(二模)数学试题(已下线)考点03函数及其性质-2-(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)浙江省名校协作体2023-2024学年高二上学期开学适应性考试数学试题
解题方法
10 . 已知函数
的定义域为R,且满足
,当
时,
若
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425412b296f3cb5160150d26ad28b16c.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c600e4a926d0e764cc94f47a09c516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028601b60f771fe2cd1dc63034b71727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a6cf9e7273a651592bb9d1cf2ea0a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425412b296f3cb5160150d26ad28b16c.png)
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