解题方法
1 . 已知函数
,
,若对所有的
,
恒成立,则实数
的值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3daad3a31a3597f75fa109736ed2ebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b7950bb06b2a90eae1267a78d1f3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa76ee1cc136a8ff42aeea3412a0770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 已知实数
满足约束条件
,若目标函数
仅在点
处取得最小值,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bda85214a45dbf7e7a473e76166213d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6befa492aef0f8f4aa8150fd8e42e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
3 . 已知函数
,
,实数
,
满足
,则
的最值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8180bc243aad2b7736998b10aa2b571a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5147ca98b87dc2bdf74b1ab1a7d166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30fbdc38ad844ced5796e6903b34e94.png)
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4 . 若a,
,则不等式
的解集是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5deac798d7ef5de3e6d799d3690dd666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43319a5251dcccf0d29e4e9d2f742699.png)
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解题方法
5 . 设
,
在
上恒成立,则
的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/837c766997c3e0bbee22040270388f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
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6 . 有甲、乙、丙、丁四位同学参加某高校的自主招生考试,结束后老师向四位同学了解情况,甲说:“乙或丙考得不错”,乙说:“甲和丙都考得不好”,丙说:“我考得不错”,丁说:“乙肯定不错”,结果只有一位同学考得不错,获得加分资格,四位同学的话只有两句是对的,则获得加分资格是_______
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名校
解题方法
7 . 设
,记
为
三个数中最大的数,则
的最小值_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67784e0c5b774a658b3c12fe05800df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc086be29684f07f3777e7d8fc62e038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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解题方法
8 . 定义区间
的长度均为
,多个区间并集的长度为各区间长度之和,例如,
的长度
.用
表示不超过
的最大整数,记
,其中
.设
,当
时,不等式
的解集区间的长度为10,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028e69c715f60bd436e790eacf93bb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c5eff93f16be6ae7174deec80302d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814f9585666952e59c1d799a173de45f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/164f7c44511bd68f3c00eb4478222031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f2754b3b1dad0794ec35a1771e1453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd396a0e54d31e309bc79a9e4cd3b07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36358933e55b5c3e45535c068d40284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab42740d8f095b5f7825d14c4c312096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
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