2014·江苏淮安·一模
1 . 已知实数
,函数
.
(1)当
时,讨论函数
的单调性;
(2)若
在区间
上是增函数,求实数
的取值范围;
(3)若当
时,函数
图象上的点均在不等式
,所表示的平面区域内,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de648cd39338d48f2d22eb82a77b4839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bc816d914817ea253f1188201df867c.png)
(1)当
![](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/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aadc68ed399afd6db385dae5e963c97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d4751724d10905823144b10c2050fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32064f8f26cafabdaf0123d0af94536b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2016-12-03更新
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3卷引用:2015届江苏省广宇学校高三年级百强生竞赛文科数学试卷