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1 . 若函数
有两个不同的零点,则实数
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f324645c18e86aa94cfb603600aeca38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2 . 关于
的不等式
有解,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b021b127a6d00ae353a46bf995427923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 已知
且
,
,
,则
的大小关系为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170829bcc0d2df7abf4043cf2f553963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75427eed2236464950247d0aee8f8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3359babceedece9218c216e3324523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba0f50c94fbd7f5b2a5388b34161c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
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4 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01cdb4a84f02a75eb447b54f73f7df6.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8302775bd5e16145edfaaf6e95490e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01cdb4a84f02a75eb447b54f73f7df6.png)
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5 . 设函数
,若存在
,使得
在
上的值域为
,则实数
的取值范围为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f294ad62dee2261f1a181b31e0475c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1254f5158d2e5f425b3c9eeceacabe9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca6d68f1de3e70696f1d5d60affe6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6e2109531e560c68f646bb77bd4ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8070a51eaec9b5a0470d4c5e12fc30f.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6250d7cf17a4a8cd9539e39ad8fe164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8070a51eaec9b5a0470d4c5e12fc30f.png)
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7 . 已知不等式
,对
恒成立,则a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de2dc8dfccd4b2bd01b79c312f0582a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d794c3af7140c07ef04547cdd0be19.png)
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8 . 已知等差数列
满足
,
为其前项和,若
,
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4927f5e4c0004453b4071074b543fa71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10599e638e83e2b43b08315a7ba93517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c46b33730f3a29b9ec3024df71375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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9 . 某圆柱的侧面展开图的周长为12cm,若其体积最大时,圆柱的高为___________ cm.
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10 . 命题“
,
”是真命题,则实数
的取值范围是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02491f9709f00a1bc169278fbe01f576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99aaea5595db1e5a12c8a1113cfffe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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