19-20高二·浙江·期末
解题方法
1 . 已知函数
.
(1)解不等式
;
(2)若对
,不等式
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042e1868719fad6e983c9ca99dd8c650.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1074e5765256f1c5224287fe634ca91.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace469a86588a5f6c4a9c43e313575ad.png)
您最近一年使用:0次
19-20高二·浙江·期末
解题方法
2 . 已知正数x,y满足
,则
的取值范围为________ ,
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6752765f21ccc6977349db19738c7b1f.png)
您最近一年使用:0次
名校
3 . 已知数列
满足
,
.
(1)求
,
,
,并由此猜想出
的一个通项公式(不需证明);
(2)用数学归纳法证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f3af3fd27683b6ab7cfb84afc24b45.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)用数学归纳法证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e468312d09c6563c9094b710a35a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65a5edad10f03908730f0d40b7fb85d.png)
您最近一年使用:0次
2020-03-05更新
|
716次组卷
|
2卷引用:安徽省安庆市第一中学2018-2019学年高二下学期期中数学(理)试题
4 . 在平面直角坐标系中,定义两点
之间的直角距离为:
现有以下命题:
①若
是
轴上的两点,则
;
②已知
,则
为定值;
③原点
与直线
上任意一点
之间的直角距离
的最小值为
;
④若
表示
两点间的距离,那么
.
其中真命题是__________ (写出所有真命题的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976a13bcc46b77df6805d88275b3616b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6082c4f8d9b2946201770a7a925bc007.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ec1ba734fa3df36ab1f56ef4fb80a73.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46ad083ea758b55acfe8b79746a678e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82923ea5d3a0b7bc6a2c529959324b0d.png)
③原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b979396a703fb14715ba39232f5786a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e32a237e5e2d4dc064d337ab21fef41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275c53e0c1cc946b417eede46e3249dc.png)
其中真命题是
您最近一年使用:0次
2020-03-03更新
|
306次组卷
|
3卷引用:河南省信阳高级中学2022-2023学年高二上学期10月月考数学试题