解题方法
1 . 设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10538e95c9c27f22c55c8f48fbf05d20.png)
,
.
(1)当
时,求不等式
的解集;
(2)证明:
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10538e95c9c27f22c55c8f48fbf05d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfcdc6e72e734c0d1ac4a1c529599165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e271134c1783c36a01413814c89e12.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d86b4ad722d7b720603eba9d330fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44e312eca38032174f9739126b81d012.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5849c56025eae3d81c3d501e9d7e2c3.png)
您最近一年使用:0次
2 . 设函数
.
(1)当
时,求不等式
的解集;
(2)证明:
,并指出等号的成立条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8608aaeb55aa4c388aa3cde902b6a81.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc0b119ea503a4a50649ac65ac83d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a1a65e895b615edc7ce6efe1edec50c.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
您最近一年使用:0次
2020-01-08更新
|
186次组卷
|
2卷引用:2020届辽宁省丹东市高三总复习阶段测试文科数学试题
名校
3 . 设函数
.
(1)若存在
,使得
,求实数
的取值范围;
(2)若
是(1)中的最大值,且正数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ab085ff06a309643102942fa31a637.png)
(1)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce5118394e703092a3ac1deb901eeeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab04de6651256f6281e9f4c1dc3c7955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deba97f507ced9a7884d4d5c855f4e3a.png)
您最近一年使用:0次
2019-05-19更新
|
1140次组卷
|
4卷引用:辽宁省渤大附中、育明高中2020届高三第五次模拟考试数学(理)试题
4 . 已知函数
,当
时,
.
(1)求
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a646ded3861df41de70ad46a86858aa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1d6e81ff62a52037bc6d9bde7cd5cc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b25a72152ef4c73cc823392338c5884.png)
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2019-05-10更新
|
299次组卷
|
2卷引用:【市级联考】辽宁省丹东市2019届高三总复习质量测试(二)文科数学试题
解题方法
5 . 设函数
,若
,
.
(1)证明:
;
(2)比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445185be3f2e586de7e18246bc5fe5ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45303c968c2de98220d7e2e5bf6093dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ccee6c93a986cb595a88d6e79aa501.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699a90feeec06a134c48cee71dfe6a71.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb19c1236065a323174a660c6a3a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf9c7cda6f0047e7d687a8e65d7ad10.png)
您最近一年使用:0次
2018-05-07更新
|
381次组卷
|
2卷引用:【全国市级联考】辽宁省丹东市2018年高三模拟(二)理科数学试题
名校
解题方法
6 . 已知
,
.
(1)若
,
满足
,
,求证:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162b509ab757916f479e2a7b3ef865a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791b86097af40d28855b1def634a8215.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51bc55c623ede1551e06f190dbb675a.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dcf0cdc42f0414a1c6fcc57284c576.png)
您最近一年使用:0次
2017-05-12更新
|
318次组卷
|
5卷引用:东北三省三校(哈师大附中、东北师大附中、辽宁省实验中学)2017届高三第三次模拟数学(理)试题