已知函数
,其中a为实数.
(1)若
在区间
上单调递增,求a的取值范围;
(2)若
,试判断关于x的方程
在区间
上解的个数,并给出证明.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/215020a0b14b3e85225dad06b340c3fe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07850d0d13e9043a28cc1fe76e8731a9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7f9b35017daa8b524c5717a355834a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11822449e06f58ca5fc9d8a34f0a70ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ddb6b6bc12da18b17656e0bfc4e0f9.png)
更新时间:2023-02-15 16:45:07
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(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
(i)证明:方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9587df831df1af5e7dd6be5fdc7bd8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d803f891ef85900ab3c7bb4565c4b7a4.png)
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