名校
解题方法
1 . 已知数列
是有无穷项的等差数列,
,公差
,若满足条件:①
是数列
的项;②对任意的正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
,都存在正整数
,使得
.则满足这样的数列的个数是______ 种.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3068733ef2ceda9f1620d5c9bcdfa542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ce64685821c3e55c07f151996ca8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a49a952a95f7af7d8b4bc55f0fbe03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b6ff283e5a6152e31ebb40a1567710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31118399bffb42470cdd4b3538970fe3.png)
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2024-04-20更新
|
172次组卷
|
2卷引用:江西省赣州市十八县市二十四校2024届高三下学期期中联考数学试题
名校
解题方法
2 . 我们把由平面内夹角成
的两条数轴
,
构成的坐标系,称为“@未来坐标系”,如图所示,
分别为
正方向上的单位向量,若向量
,则把实数对
叫做向量
的“@未来坐标”,记
,已知
,
分别为向量
,
的“@未来坐标”,若向量
,
的“@未来坐标”分别为
,
,则向量
,
的夹角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14069d21d32c724f0ebe3e311f114c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5253a9a71037d60059b60237824193b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce97db4dff9df73f5536426da4e2ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91174b2336306191ba275a87864172b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b55c8fcba2ff089e23ca9689a44a31a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f6cd7b3afcf3c24a21e16d52d7a37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad27a658ff12026c9d24d67f5f32a47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec3e60d60770fea1abb19b12a45913c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30511e6903e1c1f9a8fedbcf916ca5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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名校
3 . 已知直线
与
均与
相切,点
在
上,则
的方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b909964895b78b88b749d513ce6bf74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f17a213554a29bb0ebb3cd6241fcf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86022205a7487439dd8d0897cd3bf19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
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2024-04-18更新
|
509次组卷
|
4卷引用:陕西省西安市第一中学等校2023-2024学年高三下学期4月阶段性测试文科数学试题
4 .
的二项展开式中
项的系数为____________ .(用数值回答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa78e53fbef0888a0caf341579d8a405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3336c8ed5361c10c37300e41e03f9f2f.png)
您最近一年使用:0次
解题方法
5 . 如图,有一底面半径为1,高为3的圆柱.光源点
沿着上底面圆周作匀速运动,射出的光线始终经过圆柱轴截面的中心
.当光源点
沿着上底面圆周运动半周时,其射出的光线在圆柱内部“扫过”的面积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/6433b3d6-82fd-4060-84b3-897477e6267c.png?resizew=113)
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6 . 已知
为坐标原点,椭圆
的离心率
,短轴长为
.若直线
与
在第一象限交于
两点,
与
轴、
轴分别相交于
两点,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d541d1d1d1d74c03c9d3c8db384fccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b493a76a9fa4d5d36a4c996c4a5d790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
您最近一年使用:0次
2024-04-08更新
|
288次组卷
|
4卷引用:黑龙江省大庆市大庆中学2024届高三下学期5月期中数学试题
黑龙江省大庆市大庆中学2024届高三下学期5月期中数学试题(已下线)2024年全国高考名校名师联席命制数学押题卷(六)湖南省衡阳市衡阳县第一中学2023-2024学年高二下学期4月期中考试数学试题(已下线)专题02 圆锥曲线中的求值问题(三大题型)
解题方法
7 . 已知集合
,集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4fa7f541be676dee0b2f9ec7ad965db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d4922ffee07848ab4f57bbee91bb19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
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8 . 若复数
(
是虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed835fb636acd738d278362c423353ab.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0180da76975d8a19f26649b13ba4529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed835fb636acd738d278362c423353ab.png)
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解题方法
9 . 已知随机变量
服从正态分布
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b346cd75e48adc6d01ab6dadca77796.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2737ede793502983c82a7f3908a90aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239c27ddb51f40c21fad1c9026248044.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b346cd75e48adc6d01ab6dadca77796.png)
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10 . 已知
是奇函数,当
时,
,则
的值是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b74c4e12f40e93d56562325df2df72fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19eb08d67744f80cfa4fba99382de416.png)
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