解题方法
1 . 已知函数
的图象与直线
恰好有一个交点.设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f46a13297035069791fec890b2d7f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c23adc2a79b93771e113e0364e44fa.png)
,当
时,不等式
恒成立,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88276487a0310944d1abb266f70304d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c422a1324c543caeee39426895f19c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f46a13297035069791fec890b2d7f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c23adc2a79b93771e113e0364e44fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f38ead5f1523f60d059faa857fac20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4a55abb13ac48c95218e94dbf7cca8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4feddc398a0584bdf755d402d7e7fb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 . 若函数
在
上单调递减,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90a15e8c25acac003ce733dc34a306ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ff4a1f5d3ad9d7668fe555e70b774c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 已知直线
与曲线
和
分别相切于点
、
.有以下命题:①
(
为原点);②
;③
,则正确命题的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7c4adef3485e8ac6e50d1926365327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ae255f8d5eb377fd7708af176f6a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1e0b7888ef5ff5891d11ff723c905e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ac3f1c0906ad842ddd977a9158a7f1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 集合
,其中
,若集合
中有且只有一个整数,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db645bebfa7d784be3a8f3ca56c4660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe2115d883d13561e28006d3f6143b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 如图,某时刻点 P 与坐标原点 O 重合,将边长为2的等边三角形 PAB 沿 x 轴正方向滚动,设顶点
的轨迹方程是
,对任意的
,函数
在区间
上不是单调函数,则
的取值范围为( )
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960774144/STEM/f0bef86c8e1d4a2bb2a38a4f693b1dfb.png?resizew=153)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f08b2651fa387815a650e13d466e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8719461af0c03ae9bbb50f78fad98c0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f9cf08d908c77cefdb552a121445967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2016/4/14/1572592954769408/1572592960774144/STEM/f0bef86c8e1d4a2bb2a38a4f693b1dfb.png?resizew=153)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 定义在
上的奇函数
满足
,且当
时,不等式
恒成立,则函数
的零点的个数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee64d91962737f227ea7526db98bcf61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6903b78a833d4e542dbfe95188479b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5be3af0c67a20bee47063487d305f2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-06-05更新
|
736次组卷
|
2卷引用:黑龙江省大庆中学2016-2017学年高二下学期期末考试数学(文)试题
7 . 已知函数f(x)=|xex|,方程f2(x)+tf(x)+1=0(t∈R)有四个不同的实数根,则t的取值范围为
A.(﹣∞,﹣![]() | B.(﹣∞,﹣2) | C.(﹣![]() | D.(![]() |
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8 . 若函数
,
,则对于不同的实数
,函数
的单调区间个数不可能是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4cb99d908dff91818c7a3a89edb913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.1个 | B.2个 | C.3个 | D.5个 |
您最近一年使用:0次
2017-08-21更新
|
305次组卷
|
2卷引用:四川省眉山市2016-2017学年高二下学期期末考试数学(理)试题
9 . 若函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b269dce1ae3396d2afc82a91dc6f97ba.png)
有极值点
,且
,则关于
的方程
的不同实根的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b269dce1ae3396d2afc82a91dc6f97ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fe88b7ee3c7547dfe22a238f6fcfca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeeb4e1a1eeeea683c3a780164ba09fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4d84467d13bfb41a3d834f98c0297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4352b7136335ce4375f1a8bbb946b2ee.png)
A.5 | B.4 | C.3 | D.2 |
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2016-12-03更新
|
527次组卷
|
5卷引用:2014-2015学年四川省资阳市高二下学期期末质量测试理科数学试卷
10 . 已知定义在R上的可导函数
满足
,设
,
,则 a、b的大小关系是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d76fd9b593727147276c5ba1d7c93a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83cee6a89e9d71348029265919d4581.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70e6a8a04a04f8e2b8a964ff580410b.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
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