已知集合
,
,
(1)若
,求实数
的取值范围;
(2)若
的充分不必要条件是
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af64ae51ef115f3e12274db8ec270a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c010e29954c23286df0e8bf1c3c27c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51691ede61c2ef3d4f44b1c0d34c5f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320a7c616f6f7207a0a38bb707ac2205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2023-11-06 21:02:31
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相似题推荐
解答题-问答题
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适中
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名校
【推荐1】已知函数
有如下性质:如果常数
,那么该函数在
上是减函数,在
是增函数,其图像如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/e4e2cb64-4f6c-4438-acec-3baff2440599.png?resizew=160)
(1)已知
,
,利用上述性质,求函数
的单调区间和值域;
(2)对于(1)中的函数
和函数
,若对任意
,总存在
,使得
成立,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8fe84f107b23e63c31f4c410c04903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6ec3300d782e3950dbb66dbd734c5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ef4a52bb5db147af1089e64c85ff47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/e4e2cb64-4f6c-4438-acec-3baff2440599.png?resizew=160)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3590f011349362bf11ef7c686fdb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538193a4717d564c01145e82314c2d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)对于(1)中的函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663dca450c57095e177444db30e4b571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c44ad544d5c11dc1f35389599115907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07444159fdea87a306d2ea12cd6f027c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2618ce4371cad6e470a3942f98b1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐2】已知
,
,
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa77edd2976fd0926cda1f38df464543.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4222c490de02aafb326afbc165a69c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89bdf1717c68cfc8a306ee79757e7e21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e434d52b7741e42c21c2785eb07ffcaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
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解题方法
【推荐1】已知集合
,
.
(1)若“
”是“
”的充分条件,求
的取值范围;
(2)若
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c9136278afc3a04aa285f0b343bbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fe4cd2ddee11b8a1679ec36df74b6a.png)
(1)若“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a479511a50da604b2fc7398617db8387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eb5935678e432e6f1f3180bfdb3175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098436e597461bf8a5bab51f2b5d7493.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/366749e18358402f70feb02785251caf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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适中
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解题方法
【推荐2】已知全集为
,集合
;
(1)若集合
,存在
,使得
,求实数
的取值范围;
(2)若集合
,求实数
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/339b85cca0100adc23472c143f9a5a89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207bf4e5a9c34491d196f7f8c5d61847.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6428c4671e6d1756b33fdbf338bd30a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc4c15b1d62420f42732db3b626ce3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a3a95a978c23259caf993285d987b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030d79ae7c4b438ef8c6df45da39f9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ab4717e4827480f0f6f4ded85e52eab.png)
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【推荐1】已知集合
,集合
.
(1)若集合
,求实数
的取值范围;
(2)若
,且“
”是“
”的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c4dc87c2f427537e4d796f4bfa468b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46dde1ffe87040449708c09cd1ad01a2.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a347e53d69e6279105061e656d2f5bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](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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【推荐2】已知集合
是函数
的定义域,集合
是不等式
的解集.
:
,
:
.
(1)若
,求
的取值范围;
(2)若
:
,且
是
的充分不必要条件,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0335a0f23018fa2dfa4ef309cf567f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9257f087ab968cbdde67f301e916c5f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed006b944ea64f970fee46e2f558467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e23af61cd402b3789af2401bde9cbefe.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea9a4259cca10c1f5af28e621ebafd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7848c89302a41e9576530313fc3e61b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】设函数
(
,实数
).
(1)若
,求实数
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b785590809ddf08b2cd209bcbb377f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/482d6241435db8bb9c3b514c2a5df91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727b7b960bea80caea68404a1f942c53.png)
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适中
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解题方法
【推荐2】解关于
的不等式:
(
,
为常数).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0c26091c96aff40be338d684c3d6e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次