(1)已知
,求
的最值;
(2)若
的解集不是
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad2b21d3fe53bb35363515fdce39336.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f5811630392f4af4272c4abe76e04c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-08-07 09:39:06
|
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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1】已知函数
,函数
.
(1)当
时,求实数
的取值范围;
(2)当
与
的图象有公共点时,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef8d91bac1c2b84ce89ba28763400ea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35a6a76a97994ababce65e90e54e4b0e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】已知
,
是
的最小值.
(1)求
;
(2)若
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ba5038351498793502ba33d2486ee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417728aa8cdc8e990f9cd66a8f4dc36f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2effeb63fa1a236f82f0ad1e8248fec.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】已知函数
.
(1)当
时,解不等式
;
(2)若
的值域为[2,+∞),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bfdff4d543b742e29465ef177315e0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2868fc8e6dc8e0b15a381649a7bd5532.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e1cda660d1176d8c93210d038cb0fc.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2】已知函数
.
(1)解不等式
;
(2)若对于任意的实数
都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d9ef2a3f27e25140d8fe8384f40f84.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665dc334a37e61c356b636604eb0f8c3.png)
(2)若对于任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c62b3c44e262862c5d29c0d28ae17c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次