解题方法
1 . 设直线
的倾斜角为
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d230c11741700260723b295ca90e873.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40a8f945ca261d50888276d340da4381.png)
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2 . 已知函数
,若函数
有三个不同的零点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226d4201da24d043f6ead353055ca363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607071819768b52c1a84e04702aee6f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
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3 . 已知集合
,
.若
,则实数
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9a1e9dd14cbd2271ba2f472664ad57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92c3b621448afc43ad38e8b2b3c1904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52f72b65d657a4899745dc054ab733c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 已知函数
,
为
的导函数,其中
.
(1)当
时,求函数
的单调区间;
(2)若方程
有三个互不相同的根0,
,
,其中
.
①是否存在实数
,使得
成立?若存在,求出
的值;若不存在,说明理由.
②若对任意的
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826db5648d423c85237cb294afccdbaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7994bbcf39f4dda34e877b21af71f103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90df641ab645927ee577e79faf18dcdd.png)
①是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18cb560a081d71fdadac9473f63d3872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70d3d06b06ec518a2d171b62304bccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d6db56da4933e732a43d46d2b8c6c51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2018-07-05更新
|
466次组卷
|
3卷引用:【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研文数试题
5 . 如图,在三棱锥
中,
是正三角形,
,
分别为
,
的中点,
.
![](https://img.xkw.com/dksih/QBM/2018/7/4/1981271659053056/1982001044004864/STEM/78bd96517a604d3b90bc10597d637e14.png?resizew=217)
求证:(1)
平面
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53502463cc76201000e02df314e58769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://img.xkw.com/dksih/QBM/2018/7/4/1981271659053056/1982001044004864/STEM/78bd96517a604d3b90bc10597d637e14.png?resizew=217)
求证:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063510e3c1fb6a7ccc3b8e3e3c7d660e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f45265eaed2ba5fc08f6a112a02cd2.png)
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2018-07-05更新
|
955次组卷
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3卷引用:【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研文数试题
6 . 抛物线
上位于第一象限内的一点到焦点的距离是3,则该点坐标是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
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2018-07-05更新
|
411次组卷
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2卷引用:【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研文数试题
7 . 若函数
在其定义域上单调递减,则称函数
是“
函数”.已知
是“
函数”,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722193803e464810864df41c229d01cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5173a7cdd6bc5ea31007a31c4b7a3c55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-07-05更新
|
577次组卷
|
5卷引用:【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研文数试题
【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研文数试题【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研理数试题(已下线)2019年8月11日《每日一题》2020年高考一轮复习(理科)—— 每周一测(已下线)2019年8月11日 《每日一题》2020年高考一轮复习(文科)—— 每周一测河南省南阳华龙高级中学2021-2022学年高三上学期12月月考理科数学试题
8 . 如图,在平面直角坐标系
中,椭圆
:
的离心率为
,焦点到相应准线的距离为
,
,
分别为椭圆的左顶点和下顶点,
为椭圆
上位于第一象限内的一点,
交
轴于点
,
交
轴于点
.
![](https://img.xkw.com/dksih/QBM/2018/7/4/1981271659053056/1982001044193280/STEM/f6ecd79a27584f829a17722f26d25948.png?resizew=244)
(1)求椭圆
的标准方程;
(2)若
,求
的值;
(3)求证:四边形
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/2018/7/4/1981271659053056/1982001044193280/STEM/f6ecd79a27584f829a17722f26d25948.png?resizew=244)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d87e930abcc8c0ca4ee0d7f2da8e8b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592cc9d735b0519cadec6d52da441c0a.png)
(3)求证:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
您最近一年使用:0次
2018-07-05更新
|
659次组卷
|
2卷引用:【全国市级联考】江苏省苏州市2017-2018学年高二下学期学业质量阳光指标调研文数试题
9 . 函数
的定义域为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9fd3bcab6013d67f3507dbeb480650.png)
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解题方法
10 . 已知等差数列
的前
项中,奇数项的和为56,偶数项的和为48,且
(其中
):
(1)求数列
的通项公式;
(2)若
,
,…,
,…是一个等比数列,其中
,
,求数列
的通项公式;
(3)若存在实数
,
,使得
对任意
恒成立,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065054f4e163585d630aa42cb6323a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a74075fa3e8ab3e616abebc32ebe09d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f83381978ab0c8f4714bab33c875dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c90806629826dc67bff7dc5fe5ebd8a.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065054f4e163585d630aa42cb6323a3e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe1b1f5dac65cc9f1c7d81f2ea80ad4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b570d633e08b919bfeb6f45ee2408f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38569a1bc75614b3c8e87a1c4716dd27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d84f11d46235b6fe7daaf5c2b8a8cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d8c5e83125395143604b247fe5d32a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89bfc1010b88c22f8a11888e93d08b37.png)
(3)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00c52118cf56445309e3d5507570a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ad4897a05a6a26b10e2d8379137fa1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1ba8ccf7ed079ff4135519a3e8a237.png)
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