解题方法
1 . 已知函数
.
(1)若
,求实数
的取值范围;
(2)若
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e4655a983ea82a4d09cf3b6fa11285.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d39979cf1e03044bfc63703bb10505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e38ce59777d7392e40d8f07c5b86285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61db73a5a9bce4ece8259a4c7d29376.png)
您最近一年使用:0次
2020-03-21更新
|
114次组卷
|
2卷引用:山西省芮城县2020届高三下学期3月月考数学(理)试题
2020高三·全国·专题练习
名校
2 . 已知函数
.
(1)解不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35bd559ca747109ab682da7248dc30.png)
(2)若
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a05df8edae997c5ab235e54755ed33.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35bd559ca747109ab682da7248dc30.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95826a4a8086718b84e020387a53973c.png)
您最近一年使用:0次
名校
解题方法
3 . 已知不等式
对于任意的
恒成立.
(1)求实数
的取值范围;
(2)若
的最大值为
,且正实数
、
、
满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bbd9e88fa8b510e4d94348bc755d7ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/989680e6b74504b71f5ece8771c5301d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635bd350e542c66dbb2e96187c5ec047.png)
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2020-06-09更新
|
396次组卷
|
3卷引用:云南省曲靖市2020届高三年级第二次教学质量监测数学(文科)试题
名校
解题方法
4 . 函数
,其中
,
,
.
(1)当
时,求不等式
的解集;
(2)若
的最小值为3,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aab687eba45f4795f21b2f99ddc2746.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)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7126d6d76248996a222631cc9ea93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b562ca77fa64f3ebe40e0ad49833d5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2219d312e275702451d6323cd3e7ac67.png)
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2020-06-08更新
|
269次组卷
|
3卷引用:江西省名师联盟2020届高三5月联考理科数学试题
名校
解题方法
5 . 已知函数
.
(1)解不等式
;
(2)记函数
的最小值为m,正实数a,b满足
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e32fe6eea89758fe843a869976d08fd.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4509817be39bef4bcde115996ee39e8.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857ce2790f14cac8a0cfecc154015237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9048a4655708ea1ff6702b4b5061975a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb8d3035de644271d9c753e95fc9781.png)
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2020·全国·模拟预测
6 . (本小题满分10分)选修4-4:坐标系与参数方程
在平面直角坐标系
中,曲线C的参数方程为
(
为参数).在以坐标原点为极点,x轴的正半轴为极轴的极坐标系中,直线l的极坐标方程为
.
(1)求曲线C的普通方程及直线l的直角坐标方程;
(2)求曲线C上的点到直线l的距离的最大值与最小值.
(本小题满分10分)选修4-5:不等式选讲
已知
.
(1)求不等式
的解集;
(2)若
的最小值为M,且
,求证:
.
在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334e3a17bdb2273b59b4fa2e8c752ee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc99e3533e86d24d47630cb4ee209695.png)
(1)求曲线C的普通方程及直线l的直角坐标方程;
(2)求曲线C上的点到直线l的距离的最大值与最小值.
(本小题满分10分)选修4-5:不等式选讲
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4fd6d69f12975d53bf7eebda2e17388.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013ffa2f0de8ab4176247c53bcd8ce7b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9975c406221e50c29970483385aeb3d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5af5a0bf00894d969fdc57e4119260f.png)
您最近一年使用:0次
名校
解题方法
7 . 已知函数
.
(1)若不等式
有解,求实数
的最大值
;
(2)在(1)的条件下,若正实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70f31117e377cb9ea1a2ed5700c3921.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aaee11552fe4c0863c104364d923359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)在(1)的条件下,若正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec8242728ec43eb5ba68012f1cf2efe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67da3adba52a5a2a98d4d94a22fbef8.png)
您最近一年使用:0次
2020-06-07更新
|
263次组卷
|
3卷引用:重庆市育才中学2020届高三下学期入学考试数学(理)试题
8 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5dfc604bea430174739e20f0633b62.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7e672b1ae40d5370d13ced5bd02a19.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9977b59a789b7cfdd49185deb2b1b0d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0dd18467feea8eb478f4669a32c2d57.png)
您最近一年使用:0次
9 . 已知函数
.
(1)若函数
无极值点,求
的取值范围;
(2)若
,记
为
的最大值,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3b5e0be7302f13d0357b964ef10604.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64bc2df5b21142079fe3ca6a0f87f225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6d8a4cf957865fad1cb648fcd2cbaa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec46290ef0cf467f55cedcf48b382e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aef610d69fbcc10cfadf11aee73c76.png)
您最近一年使用:0次
解题方法
10 . 已知函数
的最大值为2.
(1)求实数m的值;
(2)若a,b,c均为正数,且
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf96902764b635b1979bd420074e92a0.png)
(1)求实数m的值;
(2)若a,b,c均为正数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3539640e5344567a1071b64751cecc8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8720d2743b33079a807740dc0d761ad.png)
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