设函数
的定义域为集合
,函数
,
的值域为集合
.
(1)当
时,求
;
(2)若“
”是“
”的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fbe58edec98d94eb6760b37fe0e6e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7686d189f01f1108bd562b12a1f6beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61be575f8c0b00027cad34b172822bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.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)
更新时间:2023-11-13 14:25:28
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【推荐1】(1)设全集
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【推荐2】已知集合
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2652aa5621591bcfa0b8ff462579ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d2326db853c060e75c9a64938334cb.png)
(1)当
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(2)若
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【推荐1】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
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【推荐2】
设命题
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设命题
![](https://img.xkw.com/dksih/QBM/2013/3/18/1571149973143552/1571149978746880/STEM/0e6271be76d845debd41edd516a2de31.png)
![](https://img.xkw.com/dksih/QBM/2013/3/18/1571149973143552/1571149978746880/STEM/db6c31383ee6499b82263b9b82e7dd86.png)
![](https://img.xkw.com/dksih/QBM/2013/3/18/1571149973143552/1571149978746880/STEM/f482ab0e6b90400e81eaefc5cc3104cb.png)
![](https://img.xkw.com/dksih/QBM/2013/3/18/1571149973143552/1571149978746880/STEM/46ab7fae30c04b3b8e1c99f062815695.png)
![](https://img.xkw.com/dksih/QBM/2013/3/18/1571149973143552/1571149978746880/STEM/64144634009b4337ae4607ccfb7b3a83.png)
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解题方法
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc775c646670d02f0a066fbcf5354b0d.png)
(1)若
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的单调性;
(2)若
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc775c646670d02f0a066fbcf5354b0d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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【推荐2】已知关于x的函数
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(1)求关于x的不等式
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(1)求关于x的不等式
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(2)若函数
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解题方法
【推荐1】已知函数
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,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab44c3b6398982bfce109d41672c9a7.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def394ad536c4e32403b39ad358cac4e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab44c3b6398982bfce109d41672c9a7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74314814cdc6fb803abb4692458af131.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74314814cdc6fb803abb4692458af131.png)
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【推荐2】(1)解方程:
;
(2)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d058097bf3407820b7536d3005b39720.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a8f783cdca546adf856a29423867c5.png)
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