在正方形
中,
分别是边
上的两个动点,且
,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02f58ebcf9978ea2082c2edec204fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056c2272e0d10d6dd9706e6324d8e62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c34414e65788c8605c35890188248c.png)
更新时间:2020-01-11 13:55:26
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相似题推荐
填空题-单空题
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适中
(0.65)
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解题方法
【推荐1】已知
是边长为
的正三角形
所在平面内一点,且
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86da04aa4638d85594b6da9d56d426d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f3af6f75cee73a485c49e63a8b642f7.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
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【推荐2】在直角梯形
中,
,点P在边AD上(包含端点),
,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fec9e3bf7ff287df2cbdff8addfaf5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/970024a82140aff773b4e63fee9b05ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea2ee6084ccda017840830036dddc23.png)
您最近一年使用:0次
填空题-单空题
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适中
(0.65)
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【推荐1】设
,
,给出下列不等式:
①
;
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8805c7fb10703f506ee58d6a23926324.png)
③
;
④
.
其中所有恒成立的不等式序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfdb41f4df7aef3a4052edba35959f8d.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8805c7fb10703f506ee58d6a23926324.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b1429463f1a6feaf67dfb116069b87.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b33c5a24d96f900511ab6e6e033f7c7.png)
其中所有恒成立的不等式序号是
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】有以下结论:
①若函数
对任意实数
都有
,则
图象关于直线
对称;
②函数
与
的图象关于直线
对称;
③对于函数
(
,且
)图象上任意两点
,
,一定有
;
④
是使得
(
且
)成立的充分不必要条件.
其中正确结论的序号为_________ .
①若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7852a186f6207db185658e9e00ca0eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290dfa43bcecc055837374f00dce6fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67fbb13f7d4b8abb69b93a398fb66ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
③对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff35f3b50966a5e3cbb0b5977af7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4175a7316c311be8544ad68a0a9fcf77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
其中正确结论的序号为
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