选修4-5:不等式选讲
已知函数
,
.
(1)当
时,解不等式
;
(2)若对任意实数
,
的最大值恒为
,求证:对任意正数
,当
时,
.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32e7a9ea48717373178e33df939854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799e937076aa5a7dcd51cdc0f40f6b0.png)
(2)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86be2de99fbf7f99cd54ab399146b00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d095c073ae38f2ad8a035f78660069.png)
更新时间:2017-06-03 16:18:53
|
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适中
(0.65)
解题方法
【推荐1】函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d6d700d9bd5de07d3f7eb4dace42c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741010936272d75cd142d9bebac2b1f2.png)
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知关于
的不等式
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(1)求实数
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(2)求函数
取得最小值时的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad7843308e7032c4042a5a241fd6cfe.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f42b4e5172b176b92ca3db7d7d4247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
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适中
(0.65)
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182aa9a09a537285c718c9429dd07d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e43b11ca443eb2592f79c3d7bfc8e8af.png)
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【推荐2】设函数
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(Ⅰ)求不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb112606cae5c176de96e556b77b4d9.png)
(Ⅰ)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dda12720fe6b382abcf00a423c60cba.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6353f8c25d304e22ac469113934d1162.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5022abc6afd4deff13845419fa38312e.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知
,
.
(1)当
时,求不等式
的解集;
(2)若
,
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551a02ec895d161dee817ce7befa5254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90a7e93ad4e0c0dbfa22e13764e5367.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b05cf23f15517e7b65a5db887b0e2ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac0b661e954284129dafa03668a6f907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c9545be376f04600d643cbd520a520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4aeed89faf0ba940c4ce65c809ecf2.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知函数
.
(1)当
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(2)若
,
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15195838d2e7f2a368bd9662f7eb86c0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5c1a7acdad9794447abfe58bd9f806.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c6a513b4ebe37b484a055d41c07118.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d3f9753b566ab4f6b4f6d772f14209d.png)
您最近一年使用:0次