名校
1 . 已知函数
,
,当
时,恒有
.
(1)求
的表达式;
(2)若方程
的解集为
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a165fb218273c2e13a9f075ffb9da7d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/196be101149acfb6a6c4ceca7fc96828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11adc9edf80fefd5c0190f2cdd70490.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d10aa3a4e49e6045068843a723fdf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-08-07更新
|
633次组卷
|
3卷引用:湖南省衡阳市第八中学2019-2020学年高二下学期6月第三次月考数学试题
名校
解题方法
2 . 已知函数
,且对
,
,都有
.
(1)求
的表达式;
(2)已知关于x的不等式
的解集为A,若
,求实数a的取值范围;
(3)已知数列
中,
,
,记
,且数列
的前n项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/282e825c14110833c45ac9db52e5f42c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6593a700bf3e89107556454666b787.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f370a1d4dd341e5ab1774a66c66c1204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845ebe200c96e5259501ad8978ffae5f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df6b1cfb0b2755e419ed28cbb4d0ece4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6397b02d758108ce97907d2efcac1d63.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2bc260323ce13981f2ee3fdfb52d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d08ed7d51b6175cae1cbc40e8878e3e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29877f249cacfa421cc082410a73e69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d35a29be4e48c56ee056c4b9cad8110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5737f1f9cad2471f3ca53241b25a1eb9.png)
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