1 . 如图,在正方体
中,
.
(1)求证:
平面
;
(2)求证:平面
平面
;
(3)求直线
和平面
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/11/17b4bf83-6b29-40b7-a4ec-b71fd7074d9b.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f5e22b37cea8a05fa13f85414c7c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
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2 . 定义在
上的偶函数
,当
时,
.
(1)求函数
在
上的表达式,并在图中的直角坐标系中画出函数
的大致图象;
![](https://img.xkw.com/dksih/QBM/2023/6/17/3261691034157056/3299852511453184/STEM/38659967917b49c18b1f1916d43ff58c.png?resizew=221)
(2)写出函数
的值域和单调区间;
(3)若
有四个零点,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a709fac76762ce4503bbed9644f91649.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2023/6/17/3261691034157056/3299852511453184/STEM/38659967917b49c18b1f1916d43ff58c.png?resizew=221)
(2)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd1017814e9883c21b17e43703a7272.png)
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解题方法
3 . (1)化简:
;
(2)已知
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5bc9f01b06467dc76f71b54cf48350e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afba7a2285fc6b24d497ba0e1742d8cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42307fbb406d52ffedf60536e2b9297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56661c5ea798d86e8b63c70d800b079.png)
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解题方法
4 . 已知复数
,
,其中
为虚数单位.
(1)若
是实数,求
的值;
(2)当
时,求复数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24edbbb166343c37d0ceb1f6bdfc5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f481087e70f116d917388907450c9a9.png)
您最近一年使用:0次
名校
解题方法
5 . 已知数列
的前n项和为
,满足
.
(1)求数列
的通项公式;
(2)设
,求数列
中的最大项和最小项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc1301b00ba983e096990d4bd7bd678.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5fc0b571e6545e133d36af338733b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
您最近一年使用:0次
2023-08-09更新
|
409次组卷
|
3卷引用:贵州省黔东南州镇远县文德民族中学校2022-2023学年高二下学期第二次月考数学试题
解题方法
6 . 公比为q的等比数列
的前n项和为
,已知
,
,
成等差数列.
(1)求q;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
(1)求q;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e0dba251534cd7f6ffb66aaf7bc762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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7 . 求下列函数的导数.
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1776051507687cdcec7dcebe5f396c0b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1720eb9e60517d349eed8900b7fc9b2.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91684caa0b082f69a3f7a9dd2d32f193.png)
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解题方法
8 . 已知椭圆
.
(1)求实数
的取值范围;
(2)若直线
过椭圆
的右焦点,且交椭圆
于
两点,求弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372d64f1d9f198f0655be7529af26d7d.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33400b08941f4f9c0ed12b0e0cdff822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2024-01-02更新
|
377次组卷
|
2卷引用:贵州省黔东南自治州镇远县文德民族中学校2021-2022学年高二上学期期末数学(文)试题
名校
解题方法
9 . 在
中,内角
,
,
的对边分别为
,
,
,且
.
(1)求
的值;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e7ee7e5e967273869be034e563dd5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0cc59416b30310683b6c24080758a4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf623a808eaaef1acef2bd44d92d34a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-08-06更新
|
350次组卷
|
2卷引用:贵州省黔东南州镇远县文德民族中学校2022-2023学年高一下学期4月月考数学试题
解题方法
10 . 已知
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b85890e5f84285dd355aa6a94466926.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efade1c47437b4392398d759647e0421.png)
您最近一年使用:0次