函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17712508f7a1fe500dcc4bedde8c4d23.png)
(1)求
的解
(2)
的解集为全体实数,求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17712508f7a1fe500dcc4bedde8c4d23.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a62d05b375bf2ae5edeea9aaa482dbf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9adba6b202228b12a840d3a6648716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-11-18 18:20:41
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】已知集合
,
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(1)当
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(2)若“
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”的必要条件,求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910a85e4673e77a34074e6b1c77e5eef.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8b0fcbae202193fd6282b4c170fee1.png)
(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知不等式
.
(1)若对于所有的实数
不等式恒成立,求
的取值范围;
(2)设不等式对于满足
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80a7cfdb7db3ac840ab143887790e5d3.png)
(1)若对于所有的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设不等式对于满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f31b51909f9758486f0d324f5e17029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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解答题-问答题
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名校
解题方法
【推荐2】命题“
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】设函数
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5a9f9c33cd0a8882da8c8c386770f60.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a65a55fcc19e13ebae0f44588952ac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448272305e1d2d64b6622a9dd4cf80fc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aab3fdc34d0ba7cbb74ebe7d34bc122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2628e2dd7a988cc80530e739c22b2280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
您最近一年使用:0次