设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c168155a86c81122dabd3ccb43796fca.png)
(1)若
,解不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4cbaa99a91cd76ed58a9bbf66313801.png)
(2)设
为方程
的两个根,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c168155a86c81122dabd3ccb43796fca.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d191d6de821fbb06a51b5a20112db6de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4cbaa99a91cd76ed58a9bbf66313801.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76238596e8d6efcd8de52188ff344bfa.png)
更新时间:2019-10-22 11:06:40
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,
只能同时满足下列三个条件中的两个:
①
的解集为
;
②
;
③
最小值为
.
(1)请写出这两个条件的序号,求
的解析式;
(2)求关于
的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bd0587f5d6a3b5db9e4a93e0dbc0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3d47e98d6faa68c4eabb388b5c8526.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a7e88b74f492f89e21e4cf65353bdb6.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
(1)请写出这两个条件的序号,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b38dab1196535a81b333dd3722aaa1.png)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】解关于
的不等式(
为任意实数):
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6058f01ff81f0fd722fcd258c0c7ecfe.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知函数
.
(1)若
恒成立,求实数
的最大值
;
(2)在(1)成立的条件下,正实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3b743cb215e038746703dc9039f9c4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29d8a43948e858bc50fa6bca8772842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)在(1)成立的条件下,正实数
![](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/6e8762c14ba07710784f3a0d554d38ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b0e403c5f00d0357d3fa30d6c2717c.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】设函数
.
(1)求不等式
的解集;
(2)若函数
的最大值为
,正实数
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b9f3e5167f9529ed109508600b76fa.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799e937076aa5a7dcd51cdc0f40f6b0.png)
(2)若函数
![](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/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc63d1efc6b7cbfa6109155246d1fd1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58f8795e8921fd1cefdf38ea0190211.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知函数
,不等式
的解集为
.
(1)求
;
(2)若
为
中的最大元素,正数
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ad4b76281d210ffe4d8d93ff4ee99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6188d5c1bb6464ce1683841244da7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5467def2b4c930a78c6a3f2cd6c611b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce43dc10fde1d27e212ce922f1f149c.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐3】已知
、
.
(1)当
时,求
的最小值;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b00b2ec3760dddf84b7a102710708c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45900deae0489e87fe448948e8091c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd03455e7778ac415bdd953c62a84f1.png)
您最近一年使用:0次