已知集合
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b6de227a73749ad7131a6f4f226fd9.png)
(1)若
,求出m的取值范围;
(2)是否存在实数m,使
是
的充分条件,若存在,求出m的范围.若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267626d32b97424fe697290855a9b451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b6de227a73749ad7131a6f4f226fd9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81b48f8ebf391353fdd01dbf0670df8.png)
(2)是否存在实数m,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8647b00cc8c8f35555c7d78cf2812c.png)
更新时间:2019-12-06 15:37:06
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【推荐1】已知
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(1)当
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(2)若
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(1)当
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(2)若
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名校
解题方法
【推荐2】在①
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问题:设集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdbbe46a98a8fdebfc46fcbc45dc88e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ceb1f338fa60976229d7ec6531b626.png)
问题:设集合
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【推荐1】已知命题
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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【推荐2】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ade832ec19e04136c21bd924dd782c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec3e492550586bb1028cbe262ef0c3e.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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