1 . 在直角坐标系中,过点A(﹣3,0),B(0,
)的直线的倾斜角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
A.30° | B.60° | C.120° | D.150° |
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2 . 已知二次函数
.
(1)写出二次函数图像的开口方向、对称轴方程;
(2)判断函数y有最大值还是最小值,并求出这个最大(小)值;
(3)设二次函数图像与y轴的交点为P,与x轴的交点为Q,求直线PQ的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3385bd7533b062aaf66778522c68ab80.png)
(1)写出二次函数图像的开口方向、对称轴方程;
(2)判断函数y有最大值还是最小值,并求出这个最大(小)值;
(3)设二次函数图像与y轴的交点为P,与x轴的交点为Q,求直线PQ的方程.
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3 . 若
,
,
三点共线,则实数m的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c21dde2ad1e31c337bfb78c810ccb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2e8d405145573838999a8695cb8332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6314d6f44c7d35b2b4b5cdc041d344.png)
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4 . 已知椭圆
的左顶点为
,上顶点为
,过椭圆
的右焦点作
轴的垂线交直线
于点
,若直线
的斜率是直线
的斜率的
倍,其中,
为坐标原点,则椭圆
的离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52eb19363bfc44a5fa5df8a30dadfc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-12-21更新
|
930次组卷
|
2卷引用:河南省平顶山市、许昌市、汝州2017-2018学年高二上学期第三次联考数学(理)试题
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解题方法
5 . 已知等差数列
的前
项和
,则过
,
两点的直线的斜率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce817f902302ebdd5a599e43df77614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d81746d8ac8b0f6ba003486e0679f08b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767f1443cbdb2e865754ea361a5e21e.png)
A.1 | B.2 | C.3 | D.4 |
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6 . 直线
(
)与
(
且
)的图象交于
,
两点,分别过点
,
作垂直于
轴的直线交
(
)的图象于
,
两点,则直线
的斜率( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f7d8690daad880b6281c07dcb00b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.与![]() | B.与![]() | C.与![]() | D.等于![]() |
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7 . 已知
,
,
,则△ABC的BC边上的高所在的直线的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16a46f03535c5af872fa8fa9f21a431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49a31f8e8dba418bd5d886998ef8d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d63f0b05d54522c263ab394064093b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2016-12-04更新
|
734次组卷
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3卷引用:2015-2016学年河南省鹤壁市高一上学期期末数学试卷
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8 . 已知点M在抛物线
上,N为抛物线的准线l上的一点,F为抛物线的焦点,若
,则直线MN的斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0261104a7c308433a0c0508ff20ea29a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9569b16e11da7f16d5a1f8dfbe68c41b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-04-06更新
|
137次组卷
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2卷引用:河南省郑州市京师杜甫高级中学2022-2023高三上学期第四次考试数学试题
9 . △ABC的两顶点A(3,7),B(
,5),若AC的中点在
轴上,BC的中点在
轴上.
(1)求点C的坐标;
(2)求AC边上的中线BD的长及直线BD的斜率 .
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572614132359168/1572614138470400/STEM/e882fd04821a423fbb520973ccc2a0af.png)
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572614132359168/1572614138470400/STEM/18ef2c1ce2e74eada4ebf4f8ee9fe547.png)
![](https://img.xkw.com/dksih/QBM/2016/5/4/1572614132359168/1572614138470400/STEM/3121aedb6a924410bdff84ddec98db28.png)
(1)求点C的坐标;
(2)求AC边上的中线BD的长及直线BD的斜率 .
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2016-12-04更新
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642次组卷
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2卷引用:2015-2016学年河南省许昌市三校高一上学期期末文科数学试卷
10 . 曲线
与直线y=k(x﹣2)+4有两个交点,则实数k的取值范围为____ .
![](https://img.xkw.com/dksih/QBM/2016/3/16/1572540793143296/1572540799213568/STEM/6273ed4fa54d4fe09f00e4698e62734a.png?resizew=89)
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