1 . 判断下列对应关系是否为集合A到集合B的函数.
(1)
,
;
(2)
,
;
(3)
,
;
(4)
,
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bcc3a6895254ad42292e78bd2516619.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd76e29e4d8ffe614d115ad909f0103.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b9bd34e49bd3cd09071aab3828cfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf2cbb914ab8c26d1c70da921a87651.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b9bd34e49bd3cd09071aab3828cfcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758be519b3cc0d256b1b0a9b2bd1d35a.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6089d077b5a79173d6560e88cbebce83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34422e51719dd44baf2217f46a653171.png)
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2023-10-26更新
|
481次组卷
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7卷引用:人教A版必修一第一章 1.2.1 函数的概念3
人教A版必修一第一章 1.2.1 函数的概念3(已下线)复习题三2(已下线)专题3.7 函数的概念与性质全章综合测试卷(基础篇)-举一反三系列湘教版(2019)必修第一册课本习题第3章复习题(已下线)第五章 函数概念与性质(知识归纳+题型突破)-速记·巧练(苏教版2019必修第一册)(已下线)【第二课】3.1.1函数的概念(已下线)艺体生一轮复习 第三章 函数与导数 第9讲 函数的概念与表示【讲】
2 . 有一个长方体的容器(如图),它的宽为10cm,高为100cm.右侧面为一活塞,容器中装有1000mL的水.活塞的初始位置(距左侧面)为
,水面高度为100cm.当活塞位于距左侧面xcm的位置时,水面高度为ycm.
,
;
(2)活塞的位置x从1cm变为2cm,水面高度y改变了多少?活塞的位置x从8cm变为10cm,水面高度y改变了多少?以上哪个过程水面高度的变化较快?
(3)试估计当
时,水面高度y的瞬时变化率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce77857aa0bb3309c3a441315565bd19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5ed502d3e81a05ba589e801337abf6.png)
(2)活塞的位置x从1cm变为2cm,水面高度y改变了多少?活塞的位置x从8cm变为10cm,水面高度y改变了多少?以上哪个过程水面高度的变化较快?
(3)试估计当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058914ecedc9189be23e13d8184d7c5b.png)
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2023-10-11更新
|
179次组卷
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3卷引用:北师大版(2019)选择性必修第二册课本习题 习题2-1
北师大版(2019)选择性必修第二册课本习题 习题2-15.1.2 导数的概念及其几何意义练习(已下线)第5.1.1讲 变化率问题-2023-2024学年新高二数学同步精讲精练宝典(人教A版2019选修第二、三册)
3 . 已知x,y为非零实数,其中
,且
,试判定下列各式哪些一定成立,哪些不一定成立,并说明理由:
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9b0357298eba0acefaea1cd86f10114.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7c7237a1a0e10ca466d5c562979bf2.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51263bcc38d75959430636061ead408.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9e55cbe11ce05263af41abd8b782f2.png)
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4 . 对数函数
,
,
(
,
,
,且a,b,c均不为1)的图象如图,试比较a,b,c的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82869dad28f771d088772a2c2b08b187.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cb3db3da689e6cad7cfc03048fcce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c276d040efa47145641c12fb89dc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
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解题方法
5 . 已知下列不等式成立,比较正数m,n的大小:
(1)
;
(2)
;
(3)
(
,且
).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc5e627fd620a1c8a0b0fb8aaea21adf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4048bd0c99412b0928e96e227dc3cf01.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1ee639114bb30095eeb425a88ebbaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
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6 . 比较下列各题中两个数的大小:
(1)
,
;
(2)
,
;
(3)
,
;
(4)
,
(
,且
,
).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3a844d118337b249319df9f677ff68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f30787ec695c8ada488e61933e9b3c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e234d52b17f7566f540442a9dde5bfe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e14615b567e97fb344054e087783bac.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8249d4825c18ee5dfbdce5c93800598c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39f5f72ceb7ea766e9be5ceb2f08d5f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ccbca6a8542fc73c25a02a864cd3f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/922356464de580fafd1690c579e879bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eba129d92ede31b728e2590c4db2a1.png)
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7 . 求下列函数的定义域:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9457936782dd115bd8f5ee4f7b89ad03.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4778a8f3aeb6a0715e570e198af61d07.png)
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8 . 写出下列对数函数的反函数(用x表示自变量,用y表示函数):
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2702a5539ca829b8b7a08407f0996e8a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3775a629bb29e890fd37692f5a6cf71.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4a90955ae3a90343d164a91e5f835c.png)
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9 . 当
,且
时,常用对数
和自然对数
可以互相转换,即存在实数A,使得
.你能推导出A的值吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a891d21bb2c7a11304beaab5054074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d582a8ea1d1846b22372ea56f6e44783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccb245042079bba161c53d431a9160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f75a1642a5a899bf4a2c7e13a91273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f9b2e089c13cfe604500815634606.png)
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10 . 已知a,b是方程
的两个实数根,求下列各式的值:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b632669adb8f2859f1335aedb63512a6.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04af04d6a45fd724ad8b8de78b615965.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c9cd9d577c47efbdcefd03d71792be.png)
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