设
,其中
,若
对一切则
恒成立,则:①
;②
;③
既不是奇函数也不是偶函数;④
的单调递增区间是
.⑤存在经过点
的直线与函数的图
像不相交;以上结论正确的是_________ (写出所有正确结论的编号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84a9f00cd56696786bb25141ccdf030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b4f1eb7194f3d98e361404f5ed5e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1324f3d9dc861bd382ef65d8c1f678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9dd4d03e28d2527d177c0c794e7095b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebef0835e0f8dbeaf73cbb0bb955c0a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb26e86944b91ebd677447646f83c65a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2022-11-11 14:39:33
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适中
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【推荐1】已知函数
,写出函数
的一个单调递增区间________ ;当
时,函数
的值域为
,则a的取值范围是_______ .
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解题方法
【推荐2】已知函数
对于任意
,都有
成立,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485c36c968a2088fb4ee473b5249b32c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac432c01ececc7f94d79c204d8485874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
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【推荐1】
,(其中
为常数,
),若
,则 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbb15d73c302c7581cb26c1db64e8c0.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289ba51d7a5c4ba9615cb50dbabbc332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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【推荐2】已知函数
,给出下列四个命题:
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③函数
的图象过点
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其中所有真命题的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347a23eafb58929e0e2d45933a7d7969.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e9fdc1f8ed0ae44b54a9a2a3aca2db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c52273a1af76b9ae9de76b168edc8f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
其中所有真命题的序号是
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【推荐1】在
中,角
,
,
所对的边分别为
,
,
,且满足
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_______ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
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解题方法
【推荐2】函数y=sin x+cos x-sin xcos x的值域为________ .
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【推荐1】已知函数
相邻的两个对称轴之间的距离为
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的图象经过点
,则函数
在
上的单调递增区间为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a9f12fb429e3c7614f2da1d3f5ced8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
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【推荐2】已知函数
,下列说法中正确的有____________ (写出相应的编号)
①:将
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个单位长度,得到的新函数为奇函数
②:函数
在
上的值域为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f326a5bebacb4e613f6cee7864de1a89.png)
③:函数
在
上单调递减
④:
,关于x的方程
有两个不等实根,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c3561ac203c77b6fc7e3a8066c97ea.png)
①:将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb076bad84890e24dbdc945ad543cb.png)
②:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd65d7c5e979706d391163aee2c18cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f326a5bebacb4e613f6cee7864de1a89.png)
③:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f43c1634275a74a31c849bf0c752b0e.png)
④:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3836132c8719c8b85b8b35f2b7ec53f7.png)
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