已知函数
.
(1)解关于
的方程
;
(2)若函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d25d91c998ecb62c22c9bf56991f88.png)
在
上的最小值为2,求b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225b3f5420702ef138a240e4be339906.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe80218396da73a2adf8fed51240afe.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d25d91c998ecb62c22c9bf56991f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e75fd7a30d037de637ad718011242e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966d9dd819cba29980da3700422c2497.png)
更新时间:2020-11-12 20:24:38
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解答题-问答题
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适中
(0.65)
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解题方法
【推荐1】已知函数
.
(1)求函数
在
上的最小值
;
(2)记
,若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80027540415bd2b98c9be19e21b5f8d8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f7dbb416ec1ff1984a724a4f48bf692.png)
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(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f89700452acc26990f045adddbad740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d02e5de0c92487382f4b98376e9740.png)
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【推荐2】设
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(1)求使不等式
成立的
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(2)先将
图象上所有点的横坐标伸长为原来的2倍,纵坐标不变;再向右平移
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(1)求使不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d6397e4f7cc4b5fe53240e0ca9df59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)先将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f00f2f6ab162f9333ec55db195d663b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】已知
的图象过点
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592744129d3499498fee320ae874645e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/716e9318df229c892e620996ebfbfb8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0b9f50dc6837cc7cee94590298e9a0.png)
(1)求
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(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49ac51bae7af5a5bd4ae43165de0d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae6ee7b3c9b0f5c72014812b6011bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f6c3db73f58d4bec9dec7ca2b7a5d.png)
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解题方法
【推荐2】已知函数
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