1 . △ABC的三内角A,B,C的对边分别为
,且
,设
,
,又△ABC的面积为S,则
与
的关系为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49831fc3ba1db10bcc59d4f9e0298ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052294b7e1874d0f660d8a6ea51123d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29febe61bba33f0a4263b7634d15878c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb74ca8fc86ddef279e33f31c1fedda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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2 . 已知数列3,33,333,3333,…则通项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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2020-02-14更新
|
298次组卷
|
3卷引用:重庆市江津第六中学2018-2019学年高一下学期期中数学试题
名校
解题方法
3 . 已知等比数列
满足:
,
是
与
的等差中项,且
不是常数列.记
是数列
的前
项和,若当
时,
取得最小值,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5383c68b875f1647217e7893d36eeed3.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97118aa23232072e4c49f612d6905d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b2667a6c91b720ca9b42d092c776cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ca4f2b82d9d7a8323c8d697338a6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321189c4c80eac29fd3eaacbca7df051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5383c68b875f1647217e7893d36eeed3.png)
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4 . 已知函数
(
且
)的最大值为
,最小值为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a37b623713dc322469d73356765708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed83485b04357536c07c06cdd74f149.png)
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5 . 已知
分别是方程
和
的解,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbbf02f7e508ccb3e870ba8607d1c295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d6ddebfbb7e7617f3928dfd592ed0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af4c784b525029df5ee481e9063078c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6252eaa487cfc5daa01030e6803d7076.png)
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6 . 函数
的值域是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8410a29e0719b61d3b80349f784583bb.png)
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7 . 已知抛物线
的焦点为F,准线为
,过点F作倾斜角为60°的直线交抛物线于A,B两点(点A在第一象限),过点A作准线l的垂线,垂足为M,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2faf3bebb0ba48c18fed0cab7f045a78.png)
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8 . 甲,乙,丙,丁四名同学参加某次过关考试,甲,乙,丙三个人分别去老师处问询成绩,老师给每个人只提供了其他三人的成绩.然后,甲说:我们四个人中至少两人不过关.乙说:我们四人中至多两人不过关.丙说:甲,乙,丁恰好有一个人过关.给出四个结论:①甲过关;②乙过关:③丙过关;④丁过关.假设他们说的都是真的,则上述结论中正确的序号是___________ .
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9 . 已知圆C:
和两点
,
若圆C上存在点M,使得
,则m的最小值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558ae84486953d62f2a846ba452cdf64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed65a119ef2a32896c6e3179a39aee18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd075255a2953bb8824fc15a262e23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b585ce1869cd983104dd48200d93b3df.png)
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2020-02-08更新
|
272次组卷
|
2卷引用:重庆市沙坪坝区第七中学校2019-2020学年高二上学期期中数学试题
名校
10 . 定义一个对应法则
.现有点
与点
,点
是线段
上一动点,按定义的对应法则
.当点
在线段AB上从点A开始运动到点B结束时,点M的对应点
所经过的路线长度为_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af10803ef1f49c911b33f47ba98c251d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0778813665f307942db9769077032f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24759fb552ac9a791e0de5d5a034394e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2934b5c01f6eacbc10146b3525ad3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
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