1 . 一般地,如果函数
的图象关于点
对称,那么对定义域内的任意
,则
恒成立,已知函数
的定义域为
,其图象关于点
对称.
(1)求常数
的值;
(2)解方程:
;
(3)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8f890a8de9551cc47469bd36c14a7f.png)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5ca6a673a07fe420e017b3e24d3887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23baf08ff7fef5b13628dccce3572e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99298d2233bf6bf8fb023f2982ce50a.png)
(1)求常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf16d33617ddf772372c9d3783ca41c.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8f890a8de9551cc47469bd36c14a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d307ec71820b6536453fbdb5069da3.png)
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解题方法
2 . 已知函数
满足以下条件:①定义在正实数集上;②
;③对任意实数
,都有
.
(1)求
的值;
(2)求证:对于任意
,都有
;
(3)若不等式
,对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a113ebf4dffd3c800e7630c781ce5525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01f8dd994ce67ad98e2ade7bf2af6a7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/984e305b607175e95829be56810c5cde.png)
(2)求证:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd29ef32d9bc2e32ef2b8639b57dc9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40482d045ebf6dc6183188ef7649e48d.png)
(3)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a37103b94f45367882a7ab7a1bd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30aeac062e28bbc1fd7d07c3c6091dea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 若实数
、
、
满足
,则称
比
接近
.
(1)若
比3接近0,求
的取值范围;
(2)已知函数
的定义域
.任取
,
等于
和
中接近0的那个值.写出函数
的解析式,并指出它的奇偶性、最小正周期、最小值和单调性(结论不要求证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b64829ac929dfe6c4adced699ad2da8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e1fbe0fb49725cf6d1e689ee8986d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a117cef9f5e2e304a88395d1f03dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d184609decfae5beb784ab6ca385803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e988af7b349ed5eb8312772ca6ce6b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2014高三·全国·专题练习
名校
4 . 已知函数f(x)的定义域为{x|x∈R,且x≠0},对定义域内的任意x1、x2,都有f(x1·x2)=f(x1)+f(x2),且当x>1时,f(x)>0.
(1)求证:f(x)是偶函数;
(2)求证:f(x)在(0,+∞)上是增函数.
(1)求证:f(x)是偶函数;
(2)求证:f(x)在(0,+∞)上是增函数.
您最近一年使用:0次
2016-12-03更新
|
1610次组卷
|
4卷引用:安徽省合肥市金汤白泥乐槐六校2019-2020学年高一上学期联考数学试题
安徽省合肥市金汤白泥乐槐六校2019-2020学年高一上学期联考数学试题宁夏青铜峡市高级中学2021-2022学年高一11月测试数学试题(已下线)2015高考数学(理)一轮配套特训:2-3函数的奇偶性与周期性(已下线)第一章 集合与函数概念单元检测卷(A)-2021-2022学年高一数学上学期单元通关培优A+B训练卷(人教A版必修1)
名校
5 . 对定义在[0,1]上的函数f(x),如果同时满足以下三个条件:
①对任意x∈[0,1],总有f(x)≥0;
②f(1)=1;
③若x1≥0,x2≥0,x1+x2≤1,有f(x1+x2)≥f(x1)+f(x2)成立.
则称函数f(x)为理想函数.
(1)判断g(x)=2x﹣1(x∈[0,1])是否为理想函数,并说明理由;
(2)若f(x)为理想函数,求f(x)的最小值和最大值;
(3)若f(x)为理想函数,假设存在x0∈[0,1]满足f[f(x0)]=x0,求证:f(x0)=x0.
①对任意x∈[0,1],总有f(x)≥0;
②f(1)=1;
③若x1≥0,x2≥0,x1+x2≤1,有f(x1+x2)≥f(x1)+f(x2)成立.
则称函数f(x)为理想函数.
(1)判断g(x)=2x﹣1(x∈[0,1])是否为理想函数,并说明理由;
(2)若f(x)为理想函数,求f(x)的最小值和最大值;
(3)若f(x)为理想函数,假设存在x0∈[0,1]满足f[f(x0)]=x0,求证:f(x0)=x0.
您最近一年使用:0次
2016-12-04更新
|
614次组卷
|
3卷引用:2016届上海市七校高三上12月联考理科数学试卷
6 . 已知函数
的图象过点
,且点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b52599af9eefa3ba41a68d6e887dd38.png)
在函数
的图象上.
(1)求数列
的通项公式;
(2)令
,若数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff35f3b50966a5e3cbb0b5977af7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd3fde59c5b7f5f7597cb89b9680352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b52599af9eefa3ba41a68d6e887dd38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a31419e0523278fb897fc050d234e9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ff35f3b50966a5e3cbb0b5977af7e3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c3cbaac3c359c16d8e93fe104ba8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2cae890b39350dd47936d6edbf919e9.png)
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2016-12-03更新
|
282次组卷
|
4卷引用:2015届吉林省长春十一中高三上学期第二次测试理科数学试卷
11-12高三上·上海·期末
名校
7 . 已知函数
(常数
.
(1)若
,且
,求
的值;
(2)若
,求证函数
在
上是增函数;
(3)若存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479ae47f656999b127044da3150cbf34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3701a33910739036a505823bc6d75be8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee708f92c52fba2937144d34a967dfee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f148f3e5650bb90bf0d7b28f0c83b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb49dbba01c4ff5f686ffc8828351b2.png)
(3)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d694b058a618cef8296d2fcacd7870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
8 . 已知函数
定义域为
,若对于任意的
,都有
,且
时,有
.
(1)证明函数
是奇函数;
(2)讨论函数
在区间
上的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291d664e9ea8088c35bb6b0550f18675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e039085a8534d73fdd142c51aaf2faa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd384d86840b7b158af41f56fe29c7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7fde71807463dbdfd8fce1655a5a9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca88b72ac8dc9c7c137af932de90bc7.png)
(1)证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291d664e9ea8088c35bb6b0550f18675.png)
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2016-12-05更新
|
981次组卷
|
2卷引用:2016-2017学年山西大同一中高一10月月考数学试卷
9 . 已知函数
,![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/d89ca161a445413c9db4a9715a63641f.png)
(1)用定义法证明
在
上是增函数;
(2)求出所有满足不等式
的实数
构成的集合;
(3)对任意的实数
,都存在一个实数
,使得
,求实数
的取值围.
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/999cfaa83f9c45bbb4b356b1fe2ef26b.png)
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/d89ca161a445413c9db4a9715a63641f.png)
(1)用定义法证明
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/b518776a5c614ce8acfb0142e11e7173.png)
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/89c6efd13b344ef3989687e35a9f869a.png)
(2)求出所有满足不等式
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/188b0aa7cb3143ef93704ce58c4df648.png)
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/6063c96f8bec46b69bf17ef45baf3d68.png)
(3)对任意的实数
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/47d5418ca895474cbe6e5055f55aec89.png)
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/fd0b7b5e6a104c39a085c0580279f355.png)
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/228bccdfb29641588ee30b55f9ca7f12.png)
![](https://img.xkw.com/dksih/QBM/2016/10/20/1573084344827904/1573084350914560/STEM/485bcc07cf2649e4bec1ef3499c3de2f.png)
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名校
10 . 如图所示,公园内有一块边长为
的等边
形状的三角地,现修成草坪,图中
把草坪分成面积相等的两部分,
在
上,
在
上.
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256703840256/1572256710049792/STEM/83b013e487864fcfa2ca1392c514964d.png)
(Ⅰ)设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832a361da851b54c6437a96488a1b987.png)
,试用
表示
的函数关系式;
(Ⅱ)如果
是灌溉水管,为节约成本希望它最短,
的位置应该在哪里?如果
是参观线路,则希望它最长,
的位置又在哪里?请给予证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2015/10/10/1572256703840256/1572256710049792/STEM/83b013e487864fcfa2ca1392c514964d.png)
(Ⅰ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/832a361da851b54c6437a96488a1b987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d70e5d13db498f1c8a2e017c56e58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(Ⅱ)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
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2016-12-03更新
|
715次组卷
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3卷引用:2014-2015学年四川省新津中学高一6月月考数学试卷