名校
解题方法
1 . 已知集合
{
对于
存在
,使得
成立}.
(1)判断
和
是否属于集合
,并说明理由;
(2)设
,求实数
的取值范围;
(3)已知
时,
,且对任意
,恒有
,令
,
,试讨论函数
,
的零点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9163ebe812708ee5337d62298c2e3363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc163d35aa285e48bcc21d6e392b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d835a5659ac57b40898658618f031f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3102c0a2f53b80f9dddbf9352537e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09618615939ec0a06784144d6c132e60.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5505d1d2ae193b43ea6a913925e9f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71778824f7891b349a03b7893107e85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb9e08269495438f43642aab22b0848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761e111df6ee9147b9353398e6315d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08869ffa8b997472fbc4deee60ae0d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b2977619f17b2e75bcb46da2de6662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c64b7abcb84f0188272b1fc8d00ed4fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e915b67f8f747698b8b46d37bc453667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08869ffa8b997472fbc4deee60ae0d3.png)
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2021-03-05更新
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5卷引用:上海市进才中学2020-2021学年高一上学期期末数学试题
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