解题方法
1 . 若复数z满足
,则复数z的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa80a1e4a2f9f20817b79ce184ccf76.png)
A.-I | B.![]() | C.-1 | D.1 |
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2 . 已知
,直线
与曲线
交于
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8302d02b1a19139f440fc930d751245f.png)
两点,则
的最小值是_________ ;曲线
在点A,B处的切线分别与
轴交于C,D两点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2d30191690f8c44bce6d32dd5365ea.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16314248d8d61b695efd5fed2348722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a899de3c9607d781251479697c911e1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8302d02b1a19139f440fc930d751245f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d8e01b1b5e63500c6878ce18769bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ff9ad292f972a399a452620d3ac608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16314248d8d61b695efd5fed2348722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2d30191690f8c44bce6d32dd5365ea.png)
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解题方法
3 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c746ae829134912924bd35bd4e39275f.png)
(1)当
时,求函数
的极值;
(2)若存在
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a274b0623171972513340511781ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c746ae829134912924bd35bd4e39275f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d448e1bab2873fa8e62adb7148a3c197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/099adf32792e7334032a80084e0cb584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
4 . 如图,过球心的平面和球面的交线称为球的大圆.球面几何中,球O的三个大圆两两相交所得三段劣弧
,
,
构成的图形称为球面三角形ABC.
与
所成的角称为球面角A,它可用二面角
的大小度量.若球面角
,
,
,则在球面上任取一点P,P落在球面三角形ABC内的概率为( )
![](https://img.xkw.com/dksih/QBM/2020/3/15/2420101377908736/2420286422884352/STEM/bee39b73a6294b78bcafe6ed071b56af.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3761d19de9331c86f313fb92cea27d2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a6f049208a8ff3350c105a41c35874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c65bea2c80af038768b74250c694e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc7563043c2607606e37b80e14b5426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aebec30356b590a72bc2a75f9b09221.png)
![](https://img.xkw.com/dksih/QBM/2020/3/15/2420101377908736/2420286422884352/STEM/bee39b73a6294b78bcafe6ed071b56af.png?resizew=167)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
5 . 已知函数
的最小值为M.
(1)求M;
(2)若正实数
,
,
满足
,求:
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fc69c21ff43797710c4dc1776f48df.png)
(1)求M;
(2)若正实数
![](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/aaba7863fad4c79a7c3c6aa2d85c28f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1771b8f48a829c9be482a0400b561d.png)
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2019-09-25更新
|
1156次组卷
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5卷引用:福建省福清华侨中学2018-2019学年高二下学期期末考试数学(理)试题
13-14高一上·浙江金华·阶段练习
名校
6 . 抛物线顶点在原点,对称轴为
轴,焦点在直线
上.则抛物线方程为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ff3de9d7c5b09530f044cd7f1847ee.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2018-12-16更新
|
121次组卷
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6卷引用:福建省福州城门中学2023-2024学年高二上学期数学综合卷试题
福建省福州城门中学2023-2024学年高二上学期数学综合卷试题(已下线)2012-2013学年安徽省蚌埠铁中高二下学期期中考试文科数学试卷【全国百强校】黑龙江省大庆市铁人中学2018-2019学年高二上学期期中考试数学(文)试题(已下线)2012-2013学年浙江省金华一中高二12月月考理科数学试卷(已下线)2014年苏教版选修1-1 2.5圆锥曲线与方程练习卷2005年江西省高中数学联合竞赛试题
7 . 若空间四边形
的两条对角线
的长分别是8,12,则过
的中点
且平行于
的截面四边形的周长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c06c3dd8b12d1cdfd5fb66b0d6568d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b93f77f3887084f97658c81d8a1af45d.png)
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2016-12-01更新
|
1040次组卷
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4卷引用:2010-2011学年福建省南安一中高二下学期期末考试数学(文)
(已下线)2010-2011学年福建省南安一中高二下学期期末考试数学(文)(已下线)2011-2012学年安徽省太湖中学高一第二学期期中考试数学试卷人教A版 全能练习 必修2 第二章 第二节 2.2.3 直线与平面平行的性质人教A版高中数学必修二2.2.2平面与平面平行的判定2