定义运算
,例如,
,则函数
的最大值为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5be66a49ba8f135380af7337ec17f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b0bf54762731fcfc5fca740ca97579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a8b3d8adfe085b704f1d1d939aff244.png)
10-11高一·浙江杭州·期中 查看更多[3]
(已下线)2011-2012学年浙江省杭州二中高一年级期中考试数学试卷浙江省宁波市余姚中学2017-2018学年高一(普通班)上学期第一次质量检测题数学试题北京市海淀区首都师范大学附属中学2019-2020学高一下学期期中考试数学(C)试题
更新时间:2019-01-30 18:14:09
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解题方法
【推荐1】对于函数,有下列5个结论:①任取
,
,都有
;②函数
在
上单调递增;③
,对一切
恒成立;④函数
有3个零点;⑤若关于
的方程
有且只有两个不同的实根
,
,则
.则其中所有正确结论的序号是
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【推荐2】已知函数
,存在
,
,则
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21610de9fca39a6b49533b3e6709f59f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4327981ee77ce2410862f46619f94dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa68448a8803dc1ab7ef8eacb87673d6.png)
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【推荐1】对于定义在区间
上的函数
,若满足对
且
时都有
,则称函数
为区间
上的“非增函数”.若
为区间
上的“非增函数”且
,
,又当
时,
恒成立.有下列命题:
①
; ②当
且
时,
;
③
;④当
时,
.
其中你认为正确的所有命题的序号为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2836e6fab597cbfbbc38ce832c6d0191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f348a0b693a24c92a2bebf7fa0dba2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51eb2613dda00677d447c986cac505bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfca9e2cea383880fb2dfe0e71b9e2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b246bfbed260da734e6c7b6e87c58438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a194417bcebea88b8ed87fdd88919f3d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc8598f93ca2191188dcb31bb5ac802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a6c0fddb9074dfc96be03b4aa24d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27822887caad20f3a075ca2fb74155c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c8d3241f1048b01c71417cc6d49453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b246bfbed260da734e6c7b6e87c58438.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fba351b49700ac6f611534df0e528fa.png)
其中你认为正确的所有命题的序号为
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解题方法
【推荐2】定义在区间
上的函数
满足:
,
时
,若
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
__________ ,三个实数a,b,c最大的为__________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cacc4d76afc98699fef81de1afd9b5b.png)
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