名校
解题方法
1 . 已知函数
.
(1)若
恒成立,求实数
的取值范围;
(2)求证:
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07bd6a17efed2637d12f1258e669ff65.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee2ed7ba3bb0e3eecec5310d8ac3873.png)
您最近一年使用:0次
名校
2 . 已知函数
,曲线
在
处切线的斜率为
.(
为自然对数的底数)
(1)求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92620f5e3d0c35ea3bd2169ec8acc44a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81605dcd2bef853122bbeb9f0be7b502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b26e43c75d383d06e10ab221862fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf541a2b1cfea6f6f88b6dbe5f9d83d9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420be23d19753ba5fb5e7231d9f4bd4f.png)
您最近一年使用:0次
2016-12-04更新
|
1301次组卷
|
3卷引用:【全国市级联考】安徽省芜湖市2018届高三5月模拟考试理科数学试题
名校
解题方法
3 . 已知函数
(a>0且a≠1).
(1)若f(x)为定义域上的增函数,求实数a的取值范围;
(2)令a=e,设函数
,且g(x1)+g(x2)=0,求证:x1+x2≥2+
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c107bc2ee43150b5cb2ebc92e854a66e.png)
(1)若f(x)为定义域上的增函数,求实数a的取值范围;
(2)令a=e,设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9deeec5601c2364c3d5a410edab4168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
您最近一年使用:0次
2018-10-02更新
|
237次组卷
|
4卷引用:安徽省合肥一六八中学2019-2020学年高二下学期第四次线上测试数学(理)试题
名校
解题方法
4 . 已知函数
,
.
(1)求过点
且与曲线
相切的直线方程;
(2)设
,其中
为非零实数,
有两个极值点
,且
,求
的取值范围;
(3)在(2)的条件下,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77227e2627be28f36ee74ee3e8b563c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20ab8782f3ad46b8608d30df21aace8.png)
(1)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d836280b3e758c30cbd7e8a5b7fbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f786a5701dc1a8a015e8843c3360151b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的条件下,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9387c3b3079c432e3845c60466fe0921.png)
您最近一年使用:0次
名校
5 . 设函数
,其中
,
是自然对数的底数.
(Ⅰ)若
是
上的增函数,求
的取值范围;
(Ⅱ)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49c7c19d9c631756c5b608db88bbb031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1fce155963060b2e5b9147a185897cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1932086ac4618b0efca2cd72c1532cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6000b174147cec2de26041837aec1b3.png)
您最近一年使用:0次
2017-04-18更新
|
767次组卷
|
3卷引用:2020届安徽省滁州市定远县重点中学高三下学期4月模拟考试数学(理)试题
名校
解题方法
6 . 已知函数
.
(1)如果关于x的不等式
在
恒成立,求实数a的取值范围;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129e6375db5601c76572401c849fd5f2.png)
(1)如果关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c42894f0db02796a353eb18a9595d77.png)
您最近一年使用:0次
10-11高三上·福建厦门·阶段练习
7 . 已知函数![](https://img.xkw.com/dksih/QBM/2011/2/18/1569997731446784/1569997736804352/STEM/794ab03e2ac141c9a7b6103149b4cfde.png?resizew=92)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(1)若函数在区间
上存在极值,其中a >0,求实数a的取值范围;
(2)如果当
时,不等式
恒成立,求实数k的取值范围;
(3)求证:
.
![](https://img.xkw.com/dksih/QBM/2011/2/18/1569997731446784/1569997736804352/STEM/794ab03e2ac141c9a7b6103149b4cfde.png?resizew=92)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
(1)若函数在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/124b108c5e6819a4b58b7362d5c30073.png)
(2)如果当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf0aab66798e1f60dc23c693c14e5a0.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e1068781bc47422019aa28f40dba79.png)
您最近一年使用:0次
8 . 已知函数
.
(1)求函数
的单调区间;
(2)若方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
有两个相异实根
,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd58e16598e6bdb3c35194af69951a2a.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb2e46f49adba6036e2624639a1b966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cc951f067811d4b0c60e8d07add9ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd8b81be8ba6f0430ccbe12f22d90f06.png)
您最近一年使用:0次
2010·湖南长沙·一模
9 . 已知
.
(1)若
,函数
在其定义域内是增函数,求
的取值范围;
(2)当
,
时,证明:函数
只有一个零点;
(3)若
的图像与
轴交于
,
两点,
中点为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a6999eea23ebccc533ed84fb3a97b4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86304c3e26200299a0480641525a283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ec3d75e53b990bc8f9a4622928dd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ae7486a9ecc9fa47de8b07cbee9677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af086f84a7f1160bfdece867dbfa0f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9ba87bd7d301f0c861ce0985b7e299.png)
您最近一年使用:0次
2016-11-30更新
|
613次组卷
|
4卷引用:【全国百强校】安徽亳州市涡阳一中2018届高三最后一卷数学理试题
【全国百强校】安徽亳州市涡阳一中2018届高三最后一卷数学理试题(已下线)湖南省长沙市一中2010届高三第一次模拟考试文科数学试题(已下线)湖南省长沙市一中2011届高三年级月考(一)数学试题(理科)2019届百师联盟全国高三冲刺考(四)全国 II 卷数学(文)试题
10 . 已知函数
.
(1)讨论
的单调性;
(2)若函数
的图象与x轴交于A,B两点,线段AB中点的横坐标为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d8f4a67418e10db4dc7dcf9183bb8b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec2e06edc27a6930c32f3450b0fb928.png)
您最近一年使用:0次