对于函数
与常数a,b,若
恒成立,则称(a,b)为函数
的一个“P数对”:设函数
的定义域为
,且f(1)=3.
(1)若(a,b)是
的一个“P数对”,且
,
,求常数a,b的值;
(2)若(1,1)是
的一个“P数对”,求
;
(3)若(
)是
的一个“P数对”,且当
时,
,求k的值及
在区间
上的最大值与最小值.
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/ff9d70f79149448c84d01eb598f2b3b5.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/56dac0f37c8243dabeae25e9b9715f44.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/36fbd3ac31bf4914a60b971f8b1fb961.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/36fbd3ac31bf4914a60b971f8b1fb961.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/e3b2346d3163414b8ceadc83e433b93f.png)
(1)若(a,b)是
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/36fbd3ac31bf4914a60b971f8b1fb961.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/2e65c991cac94c5ca2093e63b0225f21.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/d9456723f6e448098d3481a4ce2e9fc0.png)
(2)若(1,1)是
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/36fbd3ac31bf4914a60b971f8b1fb961.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/66938ed905df45f7beedba5af5edbeae.png)
(3)若(
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/a6d67d4663fa4b83b073d34d875ff899.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/36fbd3ac31bf4914a60b971f8b1fb961.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/4a7e1596c65b4b558036fee9fef075d2.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/a0242999656b478b9d688e9f5c9dcead.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/36fbd3ac31bf4914a60b971f8b1fb961.png)
![](https://img.xkw.com/dksih/QBM/2014/10/29/1571888385777664/1571888391708672/STEM/63693b44a31a48298c2e579d9553c74d.png)
14-15高三上·重庆·阶段练习 查看更多[2]
更新时间:2016-12-03 05:41:09
|
【知识点】 函数综合
相似题推荐
解答题-问答题
|
困难
(0.15)
【推荐1】已知函数
,其中
是自然对数的底数,
.
(1)若
,求曲线
在点
处的切线方程;
(2)若
,求
的单调区间;
(3)若
,函数
的图象与函数
的图象有3个不同的交点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/816df6cba90f22581887d8af08678b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da989240786ef7c3e2d903f30caf59e3.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/7ec35b7a26fb4497b10317d3da71eefe.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/7b63e169aa9149289f8d35047c5e0548.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/85c143abc35b49cf9630756cbb21fe6f.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/9094914eccec4bd89d5df20e95f6fd1a.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/7b63e169aa9149289f8d35047c5e0548.png)
(3)若
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/0a11483674eb41b7b5b8e0deb3d30ee5.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/7b63e169aa9149289f8d35047c5e0548.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/82934b9987c146dcad67f5122a1c70b1.png)
![](https://img.xkw.com/dksih/QBM/2013/5/27/1571228640641024/1571228646416384/STEM/92220338cb7f44ba85218562b97adebf.png)
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解答题-问答题
|
困难
(0.15)
名校
【推荐2】已知函数
,其中
、
是非空数集,且
,设
,
;
(1)若
,
,求
;
(2)是否存在实数
,使得
,且
?若存在,请求出满足条件的实数
;若不存在,请说明理由;
(3)若
,且
,
,
是单调递增函数,求集合
、
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47cfbdafba9b136f081f27a1c8c643db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5eb03e97d9498bff9c3dfac271dad01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c525ce6f9a5780b9e9519f13463020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d35ed1941e04d3fd5422fb016c7283ee.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70b732247dc205458ea779bb6232bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c22ffd688a198d73ce8ca03a35d70c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a60033670f8f275472d6d84ef4fda89.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e270e5e488ded8f5eafb66f2df173692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2360a07b3fdf74f5382a57d64fd83a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0c02e223893f0963b8debe1062cb73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1997004ac72ebafff467930153a7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca05074e5a317ae45d073962bdf74dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85ba3e4b3a2464076c4e2e6fd82d8ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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