已知函数
,
(1)求函数
的单调区间.
(2)当
时,
恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54664b7be0f083657f3446429e2802a0.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4ff65d94c8f070c21ffab314efffaf.png)
2021·广东佛山·模拟预测 查看更多[2]
更新时间:2021-05-28 18:01:42
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适中
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解题方法
【推荐1】已知函数
,
.
(1)求
的单调区间;
(2)设函数
,若存在
,对任意的
,总有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8bf7d67573d3bf452afaa18c46abe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f8a28f9e4c411772321994e2be3cea.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f254498c8af213a916dadb692543bfdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f7a5ea093ece4c47df93980968cbe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17641d15644d5fb2c79fd1016b21520f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c025992e3160f516e38b4297ef310e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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适中
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【推荐2】已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e433e08e72f98f8b7d75c7d4e2e6a295.png)
(1)若函数
在
处的切线平行于
轴,求函数
的单调区间;
(2)设函数
,若
在
上有两个零点,求实数
的取值范围.(其中
为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e433e08e72f98f8b7d75c7d4e2e6a295.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c81965854dbe52a513241f196edf2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e259d5f49d78c4e40cc44422c31dc38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269a04a7a7b62ac0be68f0cb9445e606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.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】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4f663e8abfcb8d6b34a3ec8d23a91f.png)
(1)判断函数
的奇偶性;
(2)求函数
的单调区间;
(3)若关于
的方程
在
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的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4f663e8abfcb8d6b34a3ec8d23a91f.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40b7a85ca8ff9b507304a935d2432a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
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适中
(0.65)
【推荐1】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f27e242e405cc9cd23b92198e4bbd37.png)
(1)讨论
的单调性;
(2)当
时,若
在
上恒成立,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f27e242e405cc9cd23b92198e4bbd37.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
您最近一年使用:0次
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适中
(0.65)
名校
解题方法
【推荐2】已知函数
是奇函数,
的定义域为
,当
时,
(
为自然数的底数)
(1)若函数
在区间
上存在极值点,求实数a的取值范围;
(2)如果当
时,不等式
恒成立,求实数
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df0670ee5fb8ba233008cdef7dcfa97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa7410deae9526dacb00c5da9dc90fc.png)
(2)如果当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0aab66798e1f60dc23c693c14e5a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次