设
,函数
,
,且
.
(1)当
时,若
在
上是单调递增函数,求b的取值范围;
(2)若
在R上恰有3个相异实根,求a的值;
(3)设
,若对任意
,都有
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05618657063e3d2f6e2acd759bd19167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd9e6fdf05e117c70c5e100feeacb95a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c9a7ed0961f8977a21dab37aab396.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4318a47d7e83d587e74bab4d3d1f6883.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bc2836dcb832b3dfdbab200f1579a8.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c792782f142178fcd4fd01afe1f8f5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538193a4717d564c01145e82314c2d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14fc72f2f4348f32826462ba8d7b003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c4c02dd2fe7139a44d953400a823da.png)
20-21高二下·浙江·期末 查看更多[2]
更新时间:2021-06-11 23:25:20
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【推荐2】设
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(1)求实数
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(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81432e58c6a5030be2c5d73183b4176.png)
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb680efece351d9253c255636c99aa39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b55854b9fd7c3b5c87f14ce191daaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddb7bcce568cdff77fb6183ce50c524.png)
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解题方法
【推荐1】设函数
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4a9b0499381f817d901359e47f1713a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8129cc09aff6f5af50a45e30190c9d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6f6e57b7c453d3d1afefe5210547db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c4d001c51cf7b47102f641ded56b01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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适中
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解题方法
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f533c44b00176b81eff4fd89c53ad4c8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f533c44b00176b81eff4fd89c53ad4c8.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
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(2)已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f48f6171a81324ad69fa56d141a37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8326eccb6fccce4cad9ff889bf0febbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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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3】已知函数
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(1)判断
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(2)若对
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4105adc6c72c366ec2c17de5dd25b74e.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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(2)若对
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