已知集合
.
(1)若
是
的充分不必要条件,求实数
的取值范围;
(2)设命题
,若命题
为真命题,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450917c717a4daaa8bbb4de2ab9acb69.png)
(1)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/0a6936d370d6a238a608ca56f87198de.png)
(2)设命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dbd914e067c3517a90040e61ad07f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2023-10-15 10:16:09
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适中
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解题方法
【推荐1】设全集为
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(1)若
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(2)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
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【推荐2】已知命题p:x2-8x-20≤0,命题q:(x-1-m)(x-1+m)≤0(m>0);若q是p的充分而不必要条件,求实数m的取值范围.
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【推荐1】已知命题
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(1)当命题
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25497e29e04522b74963d0ea37e5a0b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c57f62ade74f3d98119e04bbe4be18b.png)
(1)当命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】已知集合
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(1)存在
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60fa83e6e0e97c2b8b9cbb0fd114789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083212e693ef467e6bbcdf8b0b00efd8.png)
(1)存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070054c0b4182ab7399ed56925844e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8c5147899c7281b0233a2ca02e0847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33aa5dc843bf2e3fcab02d3634631cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)命题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd170c506a8ce70f550f5751ae016ca6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9aa6ecf57fba086c6016f5e9452c831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知
,函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7f301b242417ef1d4774f71b561b88.png)
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7b5582e1931243dbb90b7591137f23.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e7f301b242417ef1d4774f71b561b88.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6376458ac21a2f477bfa539642e36c51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)在(1)中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328cf004d1e15f1f2ea2087c294be032.png)
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适中
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【推荐2】已知f(x)=x2﹣mx+1
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1827621b6db1dee089185432c5ce77dc.png)
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