1 . 已知点
,
为不等式组
所表示平面区域上的任意一点,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ea1f5bdd213c7c3a571b4c38850bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b00247f241deb0c391fbc1ff6ab47b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
A.![]() | B.![]() | C.1 | D.![]() |
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2 . 在直角坐标系
中,直线
的参数方程为
(
为参数),曲线
的参数方程为
(
为参数),以该直角坐标系的原点
为极点,
轴的非负半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)分别求曲线
的极坐标方程和曲线
的直角坐标方程;
(2)设直线
交曲线
于
,
两点,交曲线
于
,
两点,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157f62a2e90eb2cabcda5d7fe09562d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abd09af119941fa000c5dd85d6f2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b40ec2b25361a0ddce73fc4b13750dd6.png)
(1)分别求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
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2019-01-22更新
|
5089次组卷
|
16卷引用:【市级联考】福建省宁德市 2019届高三第一学期期末质量检测数学理科试题
【市级联考】福建省宁德市 2019届高三第一学期期末质量检测数学理科试题【市级联考】福建省宁德市2019届高三第一学期期末质量检测数学文科试题陕西省渭南市2019-2020学年高三上学期期末数学文科试题【市级联考】四川省乐山市2019届高三第三次调查研究考试数学(文)试题【市级联考】四川省乐山市高中2019届高三第三次调查研究考试数学理试题四川省绵阳市涪城区南山中学2019-2020学年高三上学期11月月考数学(理)试题2020届陕西省渭南市高三上学期期末(一模)数学(理)试题甘肃省民乐县第一中学2019-2020学年高三3月线上考试数学(理)试题(已下线)理科数学-2020年高考押题预测卷02(新课标Ⅰ卷)《2020年高考押题预测卷》(已下线)专题14 坐标系与参数方程-2020年高三数学(理)3-4月模拟试题汇编(已下线)理科数学-2020年高考押题预测卷03(新课标Ⅱ卷)《2020年高考押题预测卷》(已下线)文科数学-2020年高考押题预测卷03(新课标Ⅱ卷)《2020年高考押题预测卷》东北三省四市教研联合体2021届高三第二次联合考试理科数学试题东北三省三校(哈师大附中、辽宁省实验中学、东北师范大学附属中学)2021届高三二模数学(理)试题河南省中原名校联盟2021-2022学年高三下学期3月适应性联考文科数学试题江西省景德镇一中2018-2019学年高二下学期期中考试数学(文)试题
3 . 复数
的共轭复数是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6865500350386478eeeff598f51461.png)
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4 . 函数
的部分图象大致为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc761ba1e933cd75dfcb509e601b59cb.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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5 . 已知函数
则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d7c94b99e52d548aa3737f3d14f9f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d2ef554321e2bddc54ff63dab24a401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d7c94b99e52d548aa3737f3d14f9f2.png)
A.0 | B.![]() | C.1 | D.2 |
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6 . 已知命题
:若
,则
;命题
:
,则以下为真命题的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f7c54faca6eac8af5309942062058d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8a044b53c69493ef3e576b3f2020eb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 直线
与圆
交于
两点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baabfd32465e9e50409413d9c1358279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d35465f3e40ce00a1dce54b943ae183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
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2019-01-21更新
|
316次组卷
|
2卷引用:【市级联考】福建省厦门市2019届高三第一学期期末质检文科数学试题
8 . 在
中,角
所对的边分别为
,且
.
(1)求角
;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928f55b8be95055cc90126e88b45a103.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e1cc6b334edcd3aad471721f9b4d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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9 . 已知锐角
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40af566a07309d3325408c6d6cc7f572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf2bc4687e98fdeb1a7ce817792eb17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40af566a07309d3325408c6d6cc7f572.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-01-21更新
|
1692次组卷
|
8卷引用:【市级联考】福建省厦门市2019届高三第一学期期末质检文科数学试题
10 . 如图,在
中,
,
分别为
的中点.将
沿
折起到
的位置.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/b2d14a3a-0975-4449-b7d2-e05720ab7e57.png?resizew=179)
(1)证明:
平面
;
(2)若
,
,直线
与平面
所成的角为
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d900531973c546625694146fa1509ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32cec7a97884ee6cdf106b312485482.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/b2d14a3a-0975-4449-b7d2-e05720ab7e57.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e8625ce7de5c831e15e678c763a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16dc02090b6e9263555061f14fbc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf12905647aeeded72bbca21a63f319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccfd81d120348601cd611241d1a5dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede9e40f5cf450db6f01194559a19c7e.png)
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