(1)已知函数
的图象经过点
,如图所示,
求
的最小值;
(2)已知
对任意的正实数
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a2d74ff45b38686a318fb1148cfc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6020485d1f9fa00c394c089b879edd97.png)
求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07f67ecc2884a6aeab4c0eb505b4326a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e13a139e1a63a67d9bd5fed8e7c05c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://img.xkw.com/dksih/QBM/2018/12/1/2087249735499776/2089002340679681/STEM/0ba316f1f8f442598d3bc62ace9c6ee8.png?resizew=98)
更新时间:2018-12-03 20:29:03
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解题方法
【推荐1】已知函数
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【推荐2】设函数
.
(1)讨论
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10440d9268765dd2726f59ecaa61cab.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
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【推荐3】已知函数
.
(1)讨论函数
的单调性;
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在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8e49ff5a9ac8e4a3ccb29273c76e11.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1987ecbd076d89da5ef1e2561d79d857.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ce3b6d7e32eee2a25a7769012d07c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8938db94f49dcbe0c383fba0241bb0da.png)
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解题方法
【推荐1】设函数
,
(1)若不等式
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,求不等式
的解集.
(3)若
,
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的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c7b7276ff6689b2a72f4e1a080f28b.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e88ebfb5c0d6cce558b515be06404d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d26096323351f5e1508bd1338b768b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2fa57db8e9f8ec89e1e0898842bd09.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72b1ec158439b8c797514d254b7944c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a1d065b7c597c8eb18bd48a59f05f1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97514fc2246d12ab4d9896a37c53beb1.png)
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【推荐2】已知抛物线
的焦点为
,直线
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相切于点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a499bb7ab9d720e663ec50f9355469d.png)
(Ⅰ)求抛物线
的方程;
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交
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是
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到
轴距离的最小值及此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
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(Ⅰ)求抛物线
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(Ⅱ)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ebd3da00c47aa79a3ec1cf63ce8a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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