解题方法
1 . 已知函数
满足以下条件:①定义在正实数集上;②
;③对任意实数
,都有
.
(1)求
的值;
(2)求证:对于任意
,都有
;
(3)若不等式
,对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a113ebf4dffd3c800e7630c781ce5525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01f8dd994ce67ad98e2ade7bf2af6a7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984e305b607175e95829be56810c5cde.png)
(2)求证:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29ef32d9bc2e32ef2b8639b57dc9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40482d045ebf6dc6183188ef7649e48d.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a37103b94f45367882a7ab7a1bd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30aeac062e28bbc1fd7d07c3c6091dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
2 . 已知函数
,
是一个以6为最小正周期的奇函数,则
的值为
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571973462171648/1571973467758592/STEM/df6534521f984f6b831de38911c382e8.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571973462171648/1571973467758592/STEM/d24fcc07b04c45ed80c1b72e817b4255.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571973462171648/1571973467758592/STEM/a55a0810a1f8455185cae03cefceefd4.png)
A.0 | B.6 | C.-6 | D.不能确定 |
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12-13高二下·重庆·阶段练习
3 . 若函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ffa8eec6a63cac5342c28f608528bf.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d1a15a360fb1f18366a7a6a34e7833.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ffa8eec6a63cac5342c28f608528bf.png)
您最近一年使用:0次
12-13高三上·重庆·期中
4 . 设定在R上的函数
满足:
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab92fadc9ae80f2f4a10ed25483fa42.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5588e142f9ff7801814043c8d588f33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab92fadc9ae80f2f4a10ed25483fa42.png)
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10-11高三·重庆·阶段练习
名校
5 . 已知
是定义在R上的函数,
,且对于任意
都有
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d9f629363803389dbb9342d5d1005e.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6ecbf3cc21c8c9792567063d56b4ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53710ea5f064dc2e3cd9e2eef0ae000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9c4e1ff2cc048b1d95b38ccffe20a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234f67432cb078723a0c8c3e5a48cae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d9f629363803389dbb9342d5d1005e.png)
您最近一年使用:0次
11-12高三上·重庆·阶段练习
解题方法
6 . 函数
满足
,对任意
有
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57681aee8a5c80eb6f49187903fc30d.png)
________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e347e9f04cad0f07c50030c3a19ffc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64541d7f445079207b6f671adc7d662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37843a60cef3921bc8833fcc0a33a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57681aee8a5c80eb6f49187903fc30d.png)
您最近一年使用:0次
2010·重庆·一模
解题方法
7 . 已知函数
,满足:①对任意
,都有![](https://img.xkw.com/dksih/QBM/2010/6/5/1569755385888768/1569755391262720/STEM/e5aec372eca147b5bc4e2dc8afb58d52.png?resizew=143)
;
②对任意n∈N *都有
.
(Ⅰ)试证明:
为
上的单调增函数;
(Ⅱ)求
;
(Ⅲ)令
,试证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604c3ed013411e9434f9b09044231465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2c2b34f9a5a85e9e2d4057b3c10130.png)
![](https://img.xkw.com/dksih/QBM/2010/6/5/1569755385888768/1569755391262720/STEM/e5aec372eca147b5bc4e2dc8afb58d52.png?resizew=143)
![](https://img.xkw.com/dksih/QBM/2010/6/5/1569755385888768/1569755391262720/STEM/61c06d7e06ef4e06b116740ee0d6ec6c.png?resizew=53)
②对任意n∈N *都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407169706c508bfae5d039639b49477d.png)
(Ⅰ)试证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd62e0e1189886f90e0c5bc126f64a4.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6cf16d7b4f5f2f8d6a1fe2d8a59538b.png)
(Ⅲ)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b2f851b643e3a77682f0196dcf3e797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fe881244327001ef94b611e6b159db.png)
您最近一年使用:0次