已知函数
.
(Ⅰ)讨论函数
的奇偶性;
(Ⅱ)若函数
在
有两个不同的零点
,
,证明:
;
(Ⅲ)设
,若对任意
,
都有
,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8167381ae2dc5bdea45180ce0f1e7dcd.png)
(Ⅰ)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c534f574156e120f4a8d9ebef47ede.png)
(Ⅲ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8749f112832287b0738dd83c5bf255d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02e232a7cadeefe2167d5492fd80e2c.png)
更新时间:2020-10-27 21:44:07
|
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解答题-问答题
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较难
(0.4)
名校
【推荐1】已知函数
,其中
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(1)证明:
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(2)求函数
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(3)若关于
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cd4d3650fb1a10496f63aab1ae1244f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
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解题方法
【推荐2】已知函数
,函数
.
(1)写出函数
的奇偶性和增区间(直接给出结果即可);
(2)若命题:“
”为真命题,求实数m的取值范围;
(3)是否存在实数m,使函数
在
上的最大值为0?如果存在,求出实数m所有的值,如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585dcceddb1b3d07043f5ce8870f1ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eabbf9e7b54d06ae9eaa6352a8e38b3b.png)
(1)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若命题:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8267d79fa799e6de2caa2e93f8797341.png)
(3)是否存在实数m,使函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea515e1d30beee9434b8c61f077868f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
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解答题-问答题
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较难
(0.4)
名校
【推荐1】已知函数
,
.
(1)若
,求函数
的值域;
(2)已知
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,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc626146b33bda478ba7e7d3c3668e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914a49b0d7aedc593a3e87fbab7c31ca.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225504e566da119bb27468d88b7443fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f747aab564a81ec77ae09bb63e4d47f5.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26262436a3754ea59d889086d8a70bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07eb26809a0c1042f3db8b806598dd89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba80124b944b67c0c4d6872c966cb1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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较难
(0.4)
【推荐2】设函数
.
(1)求
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(2)设函数
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(3)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c47105f83f4176e8fa9427d02d24520.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2cc4cd1e8bcb4b75b6e799156736e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eaa22142ae2df5a6039cecb18f04efd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bf02459bd23dca641411cdd0d95068a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84c5adeb3bce246ebbe10df3ee61d9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fb51c831740d9fe307c03537080448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/221d8541c36098076e61e1c16dccf7f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b006ca4156920323d4a6e5b824eb4cf.png)
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