1 . 已知
,
是椭圆和双曲线的公共焦点,
是它们的一个公共点,且
,椭圆的离心率为
,双曲线的离心率
,则![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/17ca64de2a5d4894979a2cbd25455ec2.png?resizew=68)
________ .
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/86ae73397360497abe4cf2fc688d08e6.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/0591e8985b264e5fa86cdce2b8bb8086.png?resizew=20)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/dd1e1c93c94b4aea959ef18f6317e9df.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/ad9d5994475746c5a96316da2e9543fa.png?resizew=87)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/a298a0f3df7447d5bf25923ab567eb42.png?resizew=15)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/6f5816d54b8148dd89515426ac685dfe.png?resizew=17)
![](https://img.xkw.com/dksih/QBM/2015/7/15/1572181618343936/1572181623832576/STEM/17ca64de2a5d4894979a2cbd25455ec2.png?resizew=68)
您最近一年使用:0次
2016-12-03更新
|
1254次组卷
|
2卷引用:2015届吉林省实验中学高三上学期第五次模拟考试理科数学试卷
2 . 已知函数满足
,且
是偶函数,当
时,
,若在区间
内,函数
有
个零点,则实数
的取值范围是
您最近一年使用:0次
2016-12-03更新
|
1203次组卷
|
4卷引用:2015届吉林省实验中学高三上学期第五次模拟考试理科数学试卷
3 . 若函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d73bb75b197203cd0bd5a6e12aaf4a3.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f53f81bca037a4383c1fab122a3cd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d73bb75b197203cd0bd5a6e12aaf4a3.png)
![](https://img.xkw.com/dksih/QBM/2015/3/25/1572031037652992/1572031043092480/STEM/c885927d2aec4963bbd360a113128f5b.png?resizew=2)
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4 . 若三棱锥
的三条侧棱
,
,
两两互相垂直且长都相等,其外接球半径为
,则三棱锥的表面积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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5 . 已知函数
为偶函数且
,又
,函数
,若
恰好有
个零点,则
的取值范围是 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a75c936af6a5abfd9a261b1df48a774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd194928d07910bfa5745f4660a07a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b187eca81731153e150a7255cd0962cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f73d558ee07ea98ddfa29d02f9990585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2016-12-03更新
|
376次组卷
|
3卷引用:2015届吉林省长春市普通高中高三质量监测(二)文科数学试卷
6 . 若实数x,y满足
则
的最大值为_____
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644808704/STEM/8a1117a57a994bca83e34c46abe274ec.png?resizew=96)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
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解题方法
7 . 设函数
与
是定义在同一区间
上的两个函数,若对任意的
,都有![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/0c252199a0be4f34a984b711c318d824.png?resizew=108)
,则称
与
在
上是“
度和谐函数”,
称为“
度密切区间”.设函数
与
在
上是“
度和谐函数”,则
的取值范围是____________
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/d6e948144d664fb5b7a76f8e5be4b83d.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/ec5dd6dc4322415ca3b9c604c4010f7b.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/7ee64531a5bc47c0b5de5170e3eee58a.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/60ee0991f18c454faa6a5ce1218c2671.png?resizew=60)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/0c252199a0be4f34a984b711c318d824.png?resizew=108)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/91038c9239c14be7bdd796b900fced87.png?resizew=48)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/d6e948144d664fb5b7a76f8e5be4b83d.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/ec5dd6dc4322415ca3b9c604c4010f7b.png?resizew=35)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/7ee64531a5bc47c0b5de5170e3eee58a.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/6aa157d3c91c4f19bde6bfbd96e80fac.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/7ee64531a5bc47c0b5de5170e3eee58a.png?resizew=36)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/6aa157d3c91c4f19bde6bfbd96e80fac.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/c437c113df704549ab126392f0e20dc6.png?resizew=75)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/90669df68938444a95f7934b00c3e724.png?resizew=91)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/24ece6fa1cae4f70ac67f73e54dff620.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/3d642339292741be97c1f391bfce1169.png?resizew=12)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016639008768/1572016644882432/STEM/49db843f645349b9a2fd4ec932a30c16.png?resizew=17)
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8 . 已知函数f (x)=|x-3|+1,g (x)=ax.若方程f (x)=g (x)有两个不相等的实根,则实数
的取值范围是_______ .
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016397500416/1572016403382272/STEM/b99b71f1d4bf42daaeb906bd1c773ecb.png?resizew=13)
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9 . 设等差数列
的前n项和为
,且满足
,
,则
,
,
,
(
)中最大的项是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/606e55241a2e145d54849129b8ffd20f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70d07ee08ba8455bae931aa7e165ed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e585900bbcf9f9e4dbba51a05225ead9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc0a7d048a6bc3f2f8e2c3e5a602eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4be249f216849cbe99254a71b9f656f5.png)
![](https://img.xkw.com/dksih/QBM/2015/3/18/1572016397500416/1572016403406848/STEM/2979b3c58bfb4d40bf42712d3418cc24.png?resizew=19)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7553d64dee43f97d1e16e71b92d96f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b8b3543423b54b5f229eebdc9bf713.png)
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2016-12-03更新
|
461次组卷
|
2卷引用:2015届吉林省实验中学高三上学期第三次模拟考试理科数学试卷
10 . 已知
,向量
,
,且
,则
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e72f6b2ef3329828cb8fc873eeba7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a98ecb32a172f88a56462569535b320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10ad10d26aab2367da74ce717a4235c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc23a04cdac6439ea170e799f1c1df5.png)
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