已知函数
的值域为
的定义域为
.
(1)求集合
和
;
(2)已知“
”是“
”的充分不必要条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577a685b1cda8267171ef39acea287b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c0a5019134706cfbbc516d52ee7bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)已知“
![](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:2022-12-19 07:06:06
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【推荐1】已知
,命题
人,命题
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.
(1)若
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(2)若
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知
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:“实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7ab4e71c717ff53225d38d5b32ae1e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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名校
解题方法
【推荐1】函数
的定义域为集合A,集合
·
(1)若
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;
(2)设
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cbeb07b713ab91bb95b28891b037f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee7a9828ab772ce75c049a0fb5c2db.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfb17a2a90cd479b604258d1258e9636.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c205e4fac090fa117028a19cf0007b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0297339390d194e4aa609415595ead4f.png)
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【推荐2】已知函数
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解答题-作图题
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解题方法
【推荐1】先画出下列函数的图象,再求出每个函数的值域:
(1)
,
;
(2)
,
;
(3)
,
;
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,
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(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1804c8cc2797e07d5a08f480ea0b69e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8f34a7653d92ad0162066b2170aec7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f58bbbdde60cf4f80c3ea6a1740edba5.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ede389b43c78417912542746d91d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec04e67e37fbf0c78aeb7278a9ae1cb8.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6201963fcdd54887f2af50518bd908a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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名校
【推荐2】求下列函数的值域.
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