将已知函数
向左平移半个周期得
的图象,若
在
上的值域为
,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/912a04063e8a1f048e8f0e4a85700dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d13d0b65cccde33e57652fc87471c1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
2020高三·全国·专题练习 查看更多[2]
更新时间:2020-08-18 23:50:07
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解题方法
【推荐1】函数
在
处取得最大值,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b363797455e171e5dff9193eb28cc9.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c793183ec51b2304e5f3eb0e422a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19099ff9ce1b01be72e4535e600aeb63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b363797455e171e5dff9193eb28cc9.png)
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【推荐2】若函数
在
上取到最大值A,则
的最小值为___________ .若函数
的图象与直线
在
上至少有1个交点,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8922ebc61630e3a378c33adefc28af47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b1810fd4b731bc2fe07c798fda1cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e3661a36ed3d6907852d7e8a582ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8922ebc61630e3a378c33adefc28af47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f901402ac6d1b25b76efc3bf2e5839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b1810fd4b731bc2fe07c798fda1cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e3661a36ed3d6907852d7e8a582ff0.png)
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【推荐1】已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c69303bd9eccb3ccb55c9e4cd03a8a3.png)
______ ;若将
的图象向左平移
个单位长度后得到
的图象,则函数
的图象的一个对称中心为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45000fc305adab379d961b77463c21d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c69303bd9eccb3ccb55c9e4cd03a8a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aeb076bad84890e24dbdc945ad543cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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【推荐2】将函数
,
图象上每一点的横坐标缩短为原来的一半,纵坐标不变,再向右平移
个单位长度得到
的图象,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c66a43bd12b60f74e53f33ad626581.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b36367949dd0a13695fee2c358c731d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae889b7d789bf3c3bf1d0436f026c886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c66a43bd12b60f74e53f33ad626581.png)
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