解题方法
1 . 证明:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e4b5ede691dc8378f4b83f17e34474.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802d4d77e0a21b0a44fe41b4dead66cb.png)
您最近一年使用:0次
2020-02-07更新
|
1042次组卷
|
6卷引用:人教A版(2019)必修第一册课本习题 习题4.3
人教A版(2019)必修第一册课本习题 习题4.3人教A版(2019) 必修第一册 逆袭之路 第四章 4.3 对数 小结人教A版(2019) 必修第一册 新高考名师导学 第四章 4.3 对数(已下线)4.3 对数(已下线)4.2 对数(2)(已下线)4.2 对数(2)-【帮课堂】(苏教版2019必修第一册)
名校
2 . 若函数
满足:对于任意正数
,
,都有
,
,且
,则称函数
为“速增函数”.
(1)试判断函数
与
是否是“速增函数”;
(2)若函数
为“速增函数”,求
的取值范围;
(3)若函数
为“速增函数”,且
,求证:对任意
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceaff1c2f222f8785947f5266e20c3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77b1c3485be1304688c123266ea7fc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80aeb9971a81169d671c5c329f16a2e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)试判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04e15196ce905f578e53b845242ee30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19926d6954552aa0878c4140c4d1ea70.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc21c14131288b0fd578ab9cd77b927a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f101454f99871ac8246cb19fdd1e09fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219598f1289ddb370d632ea141731d52.png)
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3 . 已知
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a592e5ca06edeb5e7471dd5cd2085480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3366c6ea946d2ac63f32c38b559a8758.png)
您最近一年使用:0次
2019-10-31更新
|
106次组卷
|
3卷引用:北师大版(2019)必修第一册课本习题 习题4-3
解题方法
4 . 设
,
是函数
的图像上的任意两点.
(1)当
时,求
的值;
(2)设
,其中
,求
;
(3)对于(2)中的
,已知
,其中
,设
为数列
的前n项的和,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6470c6a4349ea591ce2bbcd93199f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ee844c70ab064971860fb0a2b00acb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2eabd6f2b9add9d973e3c7b004ad11e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8d8441014892f9ad3dbaad3f89774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d58b0e00d782782712e3ba9076ad8f3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00ddfeda0209b335a6bb09a7eef668a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)对于(2)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84541d2c89a255d63d30c67a885a0ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49337d2a78b1d0b611cc940b1b136c5.png)
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