已知函数
.
(1)若
对
恒成立,求实数a的取值范围;
(2)若曲线
与x轴交于A,B两点,且线段AB的中点为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ddf36d2a0d775c08be486a3420b68b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6a8984aa398bf767ccd9a601d77983.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9cc958b3fd9d03138be8e204061837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f702bfe1a376398286f1dc3daf8c67.png)
2024·江西宜春·三模 查看更多[3]
更新时间:2024-06-04 19:34:56
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e497f4f35619746cda1af6ec9c11841.png)
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03db4ea1dcb63b22cf4e917df5db581e.png)
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【推荐1】已知函数
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(2)证明:
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【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29400b6534c5e8b29ef85e5bae1a5ac.png)
(1)求
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e364459b2bd18ea052c3443006d3845.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc2ec240ed620aca045b51217998cd6.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
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(3)若
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解题方法
【推荐3】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e0196fdb0660bd40cd85531f5da7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a840c593c0160c93e4d307b1325eb17e.png)
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(2)令
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25486ec39d82f7b9c83fe71d3932303.png)
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