真题
解题方法
1 . 已知函数
(
且
,
)恰有一个极大值点和一个极小值点,其中一个是
.
(Ⅰ)求函数
的另一个极值点;
(Ⅱ)求函数
的极大值
和极小值
,并求
时
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db07b7c288543a01ccbe5fef8d4162e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4950cc100c4f08bec9fc33ce6ddedac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c695c8d2f6f3f52502ac57043e3a49e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822c62241dcb6c689cb19a259e33e82d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6588fb98cf8157d3a9363d763a218d.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/e116d0c598726d9a505689a2caad0b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-11-30更新
|
1567次组卷
|
2卷引用:2008年普通高等学校招生全国统一考试理科数学(陕西卷)
2 . 已知各项全不为零的数列{ak}的前k项和为Sk,且Sk=
N*),其中a1=1.
(Ⅰ)求数列{ak}的通项公式;
(Ⅱ)对任意给定的正整数n(n≥2),数列{bk}满足
(k=1,2,…,n-1),b1=1.
求b1+b2+…+bn.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727e626d5aa3cc2a6681059ca081d09e.png)
(Ⅰ)求数列{ak}的通项公式;
(Ⅱ)对任意给定的正整数n(n≥2),数列{bk}满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114a6d01d5b7e559ae97bad052a22fd1.png)
求b1+b2+…+bn.
您最近一年使用:0次
2016-11-30更新
|
1337次组卷
|
2卷引用:2007年普通高等学校招生全国统一考试理科数学卷(陕西)
真题
3 . 设函数f(x)=
其中a为实数.
(Ⅰ)若f(x)的定义域为R,求a的取值范围;
(Ⅱ)当f(x)的定义域为R时,求f(x)的单减区间.
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678263296/STEM/188be81f05e34dc19f1246a1204d28e1.png)
(Ⅰ)若f(x)的定义域为R,求a的取值范围;
(Ⅱ)当f(x)的定义域为R时,求f(x)的单减区间.
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真题
4 . 如图,在底面为直角梯形的四棱锥![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/e30c1b519bbe4d5d8363d7bad1617409.png)
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/b1652bd373bd4d0f902439c637f26003.png)
ABCD,
,BC=6.
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/b9019522-b80f-46f5-8100-34a410dfbe67.png?resizew=306)
(Ⅰ)求证:![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/037779cc822646b4b83af9cde852c1fb.png)
(Ⅱ)求二面角
的大小.
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/e30c1b519bbe4d5d8363d7bad1617409.png)
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/b1652bd373bd4d0f902439c637f26003.png)
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/20133533cb7e4c64b248a5b2e5b1d699.png)
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/968be57259444816b2035ea94471b123.png)
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/b9019522-b80f-46f5-8100-34a410dfbe67.png?resizew=306)
(Ⅰ)求证:
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/037779cc822646b4b83af9cde852c1fb.png)
(Ⅱ)求二面角
![](https://img.xkw.com/dksih/QBM/2010/8/14/1569815673208832/1569815678214144/STEM/a0fa4c74b138492984d8648a169c7065.png)
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