1 . 已知函数f(x)是定义域在R上的奇函数,当x>0时,f(x)=x2﹣2x.
(1)求出函数f(x)在R上的解析式;
(2)写出函数的单调区间.
(1)求出函数f(x)在R上的解析式;
(2)写出函数的单调区间.
您最近一年使用:0次
2016-12-04更新
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404次组卷
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4卷引用:湖南省怀化市中方县第二中学2018-2019学年高一下学期期中数学试题
2 . 设
:
;
:
.若
是
的必要而不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015150592/STEM/43047095d79942c58b426ba32133d8b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97525da6a600f924e619d9c1298c769b.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015150592/STEM/5df55e205cc24553aee4d0818a575e6c.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015150592/STEM/fd546d8f72874dd8b5f6def435c622fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 设等差数列
的前
项和为
,且
;数列
的前
项和为
,且
,
.
(1)求数列
,
的通项公式;
(2)设
,求数列
的前
项和
.
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74623803b19b5e619aa1020b30a9505e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6f1e6b30c16268578ce4b24c2a00a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850248748bcab582d2aa2a3093d088cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
您最近一年使用:0次
4 . 如图,在四棱锥
中,底面
是正方形,
底面
,
,点
是
的中点,
且交
于点
.
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/d0ad3d8f86b14ef6b1d0b774d55be1c6.png)
(Ⅰ)求证:平面
平面
;
(Ⅱ)求二面角
的余弦值.
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/f91834aec9e4406ca6c5e530e59a5174.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/49c892179a1d470588be72914758f651.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/71f7594c28e74fa1afc78a4dd837941b.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/49c892179a1d470588be72914758f651.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/b8952d8c03ba4ef3aa724bf17a79c80e.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/56dcee58ce844e1fac90ecf34cf0c445.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/30eca33a186c44a9bee613d9b8ec0c52.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/3450569e1be3482bbed74a8e757e0629.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/e6ae040b16af480ebf6f41f0ab8c8213.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/f2089e9c69014c06818121647f28cefe.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/d0ad3d8f86b14ef6b1d0b774d55be1c6.png)
(Ⅰ)求证:平面
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/8ea98d035f694d07aa822d3db439d6be.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/1130ed172f284f1991d54d20b90ff43b.png)
(Ⅱ)求二面角
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015175168/STEM/cb526a8c5f714270aa20563b38362e9d.png)
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5 . 已知函数![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/9a7a6e4a037a4ae09216ce4bda0b6891.png)
(Ⅰ)求函数
在点
处的切线方程;
(Ⅱ)求函数
单调递增区间;
(Ⅲ)若存在
,使得
是自然对数的底数),求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/9a7a6e4a037a4ae09216ce4bda0b6891.png)
(Ⅰ)求函数
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/02629243ddc04735a1b2e5de6da5b8e8.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/a1341a0b8b524c23b58be61c13bbf32f.png)
(Ⅱ)求函数
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/02629243ddc04735a1b2e5de6da5b8e8.png)
(Ⅲ)若存在
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/602a8290364e4ef4b333ef07f10266f4.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/25248933e2314cd4a312b2d3b2f8774a.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015363584/STEM/7b6e1339cf4c4387bb323f07215f7c30.png)
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2014·河北石家庄·一模
名校
解题方法
6 . 已知数列
是各项均为正数的等比数列,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c843f154b4a5b2e1061e73cfe08249.png)
(1)数列
的通项公式;
(2)设数列
满足
,求该数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c843f154b4a5b2e1061e73cfe08249.png)
(1)数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180b8aa42066cf917a181129a3bd0916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2016-12-02更新
|
2804次组卷
|
6卷引用:【全国百强校】湖南省怀化三中2018-2019学年高二上学期期中考试理科数学试卷
11-12高三上·北京东城·期末
名校
7 . 函数
部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015109632/STEM/c18b90491e5640acb98cf4aa3883ffbe.png?resizew=265)
(Ⅰ)求
的最小正周期及解析式;
(Ⅱ)设
,求函数
在区间
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45079cbb3e322a1b384b5bab005a9915.png)
![](https://img.xkw.com/dksih/QBM/2015/3/26/1572037009702912/1572037015109632/STEM/c18b90491e5640acb98cf4aa3883ffbe.png?resizew=265)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d088c080c59af2e9c3dfc6013e82172f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778662c16848db470c6537705b8a839c.png)
您最近一年使用:0次
2016-12-03更新
|
998次组卷
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6卷引用:2015届湖南怀化市中小学课改教育监测高三上学期期中考试理科数学试卷
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