1 . 某学校拟建一块周长为400米的操场,如图所示,操场的两头是半圆形,中间区域是矩形,学生做操一般安排在矩形区域,为了能让学生的做操区域尽可能大,矩形的长应该设计成________ 米.
![](https://img.xkw.com/dksih/QBM/2015/5/4/1572091701411840/1572091707277312/STEM/d79b3c64adc14470b8278b31732904d1.png?resizew=131)
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2014·北京朝阳·二模
2 . 设等差数列
的公差为
,前
项和为
,若
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7335c79ec0592fc36288f5135e86c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f123fdd1d4d96dee48d1f7845a94be7.png)
A.10 | B.![]() |
C.![]() | D.![]() |
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2014·北京东城·一模
名校
3 . 如图,在三棱锥
中,
,平面
平面
为
中点,
分别为线段
上的动点(不含端点),且
,则三棱锥
体积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852cf20f630bc72135dd90e442421b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5936c7ff73fd5ab2b24e887acef6a2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99e4454d57101b16bc2e3198f213a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51dfab0c1ec275ff83d08c7293968c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ecae9f980807a1208594ab89ef061c.png)
![](https://img.xkw.com/dksih/QBM/2014/5/14/1571718289285120/1571718294470656/STEM/306efe3758e04ea18e83387659a5767f.png?resizew=144)
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2016-12-03更新
|
2286次组卷
|
5卷引用:2014届北京市东城区高三下学期综合练习(一)理科数学试卷
(已下线)2014届北京市东城区高三下学期综合练习(一)理科数学试卷河北省衡水市2018届高三高考模拟联考理数试题2015-2016学年江西南昌二中高二下期中数学(理)试卷2016-2017学年重庆万州二中高二理上期中数学试卷贵州省遵义市第四中学2017-2018学年高二上学期第一次月考数学试题
2013·北京西城·二模
解题方法
4 . 已知正数
满足
,
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132bc768c61ab195768601a0be02222a.png)
![](https://img.xkw.com/dksih/QBM/2013/8/28/1571327941476352/1571327946964992/STEM/ff8bd7433c004de9b0001e2bf345faa2.png?resizew=96)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2011·北京朝阳·一模
5 . 定义区间
,
,
,
的长度均为
,多个区间并集的长度为各区间长度之和,例如,
的长度
.用
表示不超过
的最大整数,记
,其中
.设
,
,若用
分别表示不等式
,方程
,不等式
解集区间的长度,则当
时,有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205e3835fe3c3cac138944df59d42561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec826cdf89516490ca86561c10ab38a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd21eb8d752a4b6d66e93e040a74a4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67466474e70982fa28d80257657551a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd07901c1c222b251d84d3aaf6faa260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d7f91dda3a7980f760792f40f17c3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e567afdff580c37715672663a488d77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab85825d4a002600ca41bd3cd2ee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7a017b650472c485f58b576367376c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0be07495dbc744e1ecabac66f748218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9e1dc5a890132d6353e4ce16ada58ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85b590af2e343fd962350dacffd1637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/367c96a0ff95b92877eda2a7c98871e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7856ee6dd4ec9d77d24e2c138fd4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6114c9e15216f4646012c22346583c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18879e4dd29651e5f747e7f827b9e849.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2012·北京·一模
解题方法
6 . 已知直线
与
轴,
轴分别交于
两点,若动点
在线段
上,则
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2436951e9a6f5ca0fc0ae65b9d787119.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827539d066d1b78e7ef8bc1569864971.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
A.![]() | B.2 | C.3 | D.![]() |
您最近一年使用:0次
2011·北京西城·二模
7 . 已知点
及抛物线
,若抛物线上点
满足
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f01b186ac8aa73e1a3609b40b6c3ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bcdcd019945933d20cc6e90af7eb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2011·北京东城·一模
8 . 设不等式组
在直角坐标系中所表示的区域的面积为
,则当
时,
的最小值为_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48765a7b8e4f6d0fe282a04f118522e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3878d46c620ecbff2e7ae431f2fed57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d854e9b075cc515c8dd629b4f11b13f.png)
您最近一年使用:0次
2010·北京海淀·二模
解题方法
9 . 在
中,角
,
,
所对应的边分别为
,
,
,若
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/005a89da1379d2fe5f0880cf0a67ac03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca69890d870ac9a79fe891ff57396e37.png)
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