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提示:单击题文可显示答案与解析。
题号:5078976
题型:选择题
难易度:容易
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
题号:5078977
题型:选择题
难易度:较易
日期:2017-08-23
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知
![](http://static.zujuan.xkw.com/Upload/2017-10/20/8d64282d-0dc6-4b37-a4b9-50f066138bb4/paper.files/image001.png)
为虚数单位,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/8d64282d-0dc6-4b37-a4b9-50f066138bb4/paper.files/image002.png)
为复数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/8d64282d-0dc6-4b37-a4b9-50f066138bb4/paper.files/image003.png)
的共轭复数,若
![](http://static.zujuan.xkw.com/Upload/2017-10/20/8d64282d-0dc6-4b37-a4b9-50f066138bb4/paper.files/image004.png)
,则
![](http://static.zujuan.xkw.com/Upload/2017-10/20/8d64282d-0dc6-4b37-a4b9-50f066138bb4/paper.files/image005.png)
( )
题号:5078978
题型:选择题
难易度:容易
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】设正项等比数列
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image028.png)
的前
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image029.png)
项和为
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image030.png)
,且
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image031.png)
,若
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image032.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image033.png)
,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image034.png)
( )
题号:5078979
题型:选择题
难易度:较难
日期:2015-11-09
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】
![](http://static.zujuan.xkw.com/Upload/2017-10/20/18f94a65-091b-4863-bcc1-e4f03e25bf67/paper.files/image001.png)
的展开式中
![](http://static.zujuan.xkw.com/Upload/2017-10/20/18f94a65-091b-4863-bcc1-e4f03e25bf67/paper.files/image002.png)
的系数是( )
题号:5078980
题型:选择题
难易度:容易
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image051.png)
中,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image052.png)
,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image051.png)
为( )
A.等腰三角形 | B. 的三角形 |
C.等腰三角形或 的三角形 | D.等腰直角三角形 |
题号:5078981
题型:选择题
难易度:较难
日期:2017-07-27
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知等差数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image001.png)
的公差
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image002.png)
,且
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image003.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image004.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image005.png)
成等比数列,若
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image006.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image007.png)
为数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image001.png)
的前
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image008.png)
项和,则
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35c70f17-5ca3-4374-b838-e6b70abef0ba/paper.files/image009.png)
的最小值为( )
题号:5078982
题型:选择题
难易度:较难
日期:2017-05-06
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】如图,网格纸上小正方形的边长为1,粗线画出的是某三棱锥的三视图,则该三棱锥的体积为( )
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3aadcddb-bf88-4a11-9462-660e204efb5d/paper.files/image001.png)
题号:5078983
题型:选择题
难易度:较易
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
题号:5078984
题型:选择题
难易度:一般
日期:2017-05-02
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】设
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35a8f0fc-9584-4766-955e-724aa80530c5/paper.files/image001.png)
,若关于
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35a8f0fc-9584-4766-955e-724aa80530c5/paper.files/image002.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35a8f0fc-9584-4766-955e-724aa80530c5/paper.files/image003.png)
的不等式组
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35a8f0fc-9584-4766-955e-724aa80530c5/paper.files/image004.png)
表示的可行域与圆
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35a8f0fc-9584-4766-955e-724aa80530c5/paper.files/image005.png)
存在公共点,则
![](http://static.zujuan.xkw.com/Upload/2017-10/20/35a8f0fc-9584-4766-955e-724aa80530c5/paper.files/image006.png)
的最大值的取值范围为( )
题号:5078985
题型:选择题
难易度:一般
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知函数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image124.png)
(
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image125.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image126.png)
),其图像与直线
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image127.png)
相邻两个交点的距离为
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image128.png)
,若
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image129.png)
对于任意的
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image130.png)
恒成立,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image131.png)
的取值范围是( )
题号:5078986
题型:选择题
难易度:较难
日期:2017-07-30
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知定义在
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image001.png)
上的奇函数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image002.png)
的导函数为
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image003.png)
,当
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image004.png)
时,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image002.png)
满足
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image005.png)
,则
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image002.png)
在
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5074c4a8-2755-487f-bd0c-750e57ebca2e/paper.files/image001.png)
上的零点个数为( )
题号:5078987
题型:选择题
难易度:较难
日期:2016-10-12
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知函数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/6e7ec35e-b944-45db-8fb8-cd616898becc/paper.files/image001.png)
的图像上有且仅有四个不同的点关于直线
![](http://static.zujuan.xkw.com/Upload/2017-10/20/6e7ec35e-b944-45db-8fb8-cd616898becc/paper.files/image002.png)
的对称点在
![](http://static.zujuan.xkw.com/Upload/2017-10/20/6e7ec35e-b944-45db-8fb8-cd616898becc/paper.files/image003.png)
的图像上,则实数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/6e7ec35e-b944-45db-8fb8-cd616898becc/paper.files/image004.png)
的取值范围是( )
题号:5078988
题型:填空题
难易度:容易
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image187.png)
,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image188.png)
__________.
题号:5078989
题型:填空题
难易度:一般
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知锐角
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image051.png)
的外接圆的半径为1,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image193.png)
,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image194.png)
的取值范围为__________.
题号:5078990
题型:填空题
难易度:较难
日期:2017-05-17
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0f2f3313-50d6-43fb-91cb-2fb7d1ac7715/paper.files/image001.png)
满足
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0f2f3313-50d6-43fb-91cb-2fb7d1ac7715/paper.files/image002.png)
,则数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0f2f3313-50d6-43fb-91cb-2fb7d1ac7715/paper.files/image001.png)
的前100项和为__________.
题号:5078991
题型:填空题
难易度:较难
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】函数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image223.png)
图象上不同两点
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image224.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image225.png)
处切线的斜率分别是
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image226.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image227.png)
,规定
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image228.png)
(
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image229.png)
为线段
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image230.png)
的长度)叫做曲线
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image223.png)
在点
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image231.png)
与
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image232.png)
之间的“弯曲度”,给出以下命题:
①函数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image233.png)
图象上两点
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image231.png)
与
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image232.png)
的横坐标分别为1和2,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image234.png)
;
②存在这样的函数,图象上任意两点之间的“弯曲度”为常数;
③设点
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image231.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image232.png)
是抛物线
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image235.png)
上不同的两点,则
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image236.png)
;
④设曲线
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image237.png)
(
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image238.png)
是自然对数的底数)上不同两点
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image224.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image225.png)
,且
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image239.png)
,若
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image240.png)
恒成立,则实数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image241.png)
的取值范围是
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image242.png)
.
其中真命题的序号为__________.(将所有真命题的序号都填上)
题号:5078992
题型:解答题
难易度:较易
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】如图,在
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image051.png)
中,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image256.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image257.png)
为边
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image258.png)
上的点,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image259.png)
为
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image260.png)
上的点,且
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image261.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image262.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image263.png)
.
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image264.png)
(1)求
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image265.png)
的长;
(2)若
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image266.png)
,求
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image267.png)
的值.
题号:5078993
题型:解答题
难易度:一般
日期:2017-07-25
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】如图所示,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image001.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image002.png)
分别是单位圆与
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image003.png)
轴、
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image004.png)
轴正半轴的交点,点
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image005.png)
在单位圆上,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image006.png)
(
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image007.png)
),
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image008.png)
点坐标为
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image009.png)
,平行四边形
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image010.png)
的面积为
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image011.png)
.
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image012.png)
(1)求
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image013.png)
的最大值;
(2)若
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image014.png)
,求
![](http://static.zujuan.xkw.com/Upload/2017-10/20/ee5cda13-5964-4113-84f5-76081862df08/paper.files/image015.png)
的值.
题号:5078994
题型:解答题
难易度:较难
日期:2014-07-17
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image001.png)
满足对任意的
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image002.png)
都有
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image003.png)
,且
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image004.png)
.
(1)求数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image001.png)
的通项公式;
(2)设数列
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image005.png)
的前
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image006.png)
项和为
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image007.png)
,不等式
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image008.png)
对任意的正整数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image006.png)
恒成立,求实数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/77ab4691-2f1d-41be-ae6e-1cd1e239ba66/paper.files/image009.png)
的取值范围.
题号:5078995
题型:解答题
难易度:较难
日期:2017-10-21
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知函数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image361.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image362.png)
.
(1)求函数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image155.png)
的单调区间;
(2)若关于
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image045.png)
的不等式
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image363.png)
恒成立,求整数
![](http://static.zujuan.xkw.com/Upload/2017-10/21/61fa8d25-c89c-413e-af3c-18607093aaff/paper.files/image088.png)
的最小值.
题号:5078996
题型:解答题
难易度:较难
日期:2017-08-11
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】已知函数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image001.png)
(其中
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image002.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image003.png)
为自然对数的底数,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image004.png)
…).
(1)若函数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image005.png)
仅有一个极值点,求
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image006.png)
的取值范围;
(2)证明:当
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image007.png)
时,函数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image005.png)
有两个零点
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image008.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image009.png)
,且
![](http://static.zujuan.xkw.com/Upload/2017-10/20/0a274cbe-8b17-4f03-a7a3-587e8b22b464/paper.files/image010.png)
.
题号:5078997
题型:解答题
难易度:较难
日期:2017-08-23
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】选修4-4:坐标系与参数方程
将圆
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image001.png)
(
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image002.png)
为参数)上的每一个点的横坐标保持不变,纵坐标变为原来的
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image003.png)
,得到曲线
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image004.png)
.
(1)求曲线
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image004.png)
的普通方程;
(2)设
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image005.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image006.png)
是曲线
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image004.png)
上的任意两点,且
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image007.png)
,求
![](http://static.zujuan.xkw.com/Upload/2017-10/20/3a189cd0-b736-4c8d-80bb-98d72c6686ea/paper.files/image008.png)
的值.
题号:5078998
题型:解答题
难易度:一般
日期:2017-05-05
来源:【全国百强校】河北省衡水中学2018届高三上学期二调考试数学(理)试题
【题文】选修4-5:不等式选讲
已知函数
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image001.png)
,
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image002.png)
.
(1)当
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image003.png)
时,解不等式
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image004.png)
;
(2)若存在
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image005.png)
满足
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image006.png)
,求
![](http://static.zujuan.xkw.com/Upload/2017-10/20/5e5c0005-ca72-4c86-9ab1-bfafd9d366f3/paper.files/image007.png)
的取值范围.