设函数
.
(1)讨论函数
在
内的单调性;
(2)记
,求函数
在
上的最大值
;
(3)在(2)中,取
,求
满足
时的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5965ab6b5f60b6b97c1273d3c347e01.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7898c807137fd5a7e1a7d32ba4d8db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a80708bb56041678e6256ca37ec2355.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b8d23d277e8bdc3845c544298b5341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df8b6ba7232111e6862e17721712c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d4e402f43b62a3045d9f0da2e03441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)在(2)中,取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0cf0c27c85a9e84b89a7fa2ba3be50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dcd1a9776a762ae319c61acec7a96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416294778261a8b555e9433464d10211.png)
18-19高三下·上海徐汇·开学考试 查看更多[3]
更新时间:2020-03-21 13:51:23
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(1)当
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(2)若
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【推荐2】已知二次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea2fdda67d2a98caafce60658a57c15.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(3) 若
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【推荐1】已知函数
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(1)当
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(2)若
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【推荐2】已知函数
,记
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⑴解不等式:
;
⑵设k为实数,若存在实数
,使得
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⑶记
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1779df741c1ca6037bc2e6e8a18cacc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541ca543427de0dafb2c1a1254f277d3.png)
⑴解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1942b1e453408eab5013d04c257f7796.png)
⑵设k为实数,若存在实数
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⑶记
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【推荐1】已知函数
,其中
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在
上是增函数,求
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(2)若存在
,使得关于
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有三个不相同的实数解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c2a64f81f7d3ae4c8c4b4c401a16ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfed3b23a41131d4d9ecc98e5dffa51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6925dff2223dcff419dc6107204be03c.png)
(1)若
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(2)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
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【推荐1】已知函数
在
上为奇函数,
,
.
(1)求实数
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(2)指出函数
的单调性(说明理由,不需要证明);
(3)设对任意
,都有
成立;请问是否存在
的值,使
最小值为
,若存在求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8932f7d6ef4d9e276fdfd582d9fd9934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
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【推荐2】已知函数
,
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.
(1)当
时,求函数
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(2)求关于
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(3)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a29cd9da83e06d5d4929f6ae71c6567.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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