1 . 已知双曲线的标准方程为
.
(1)求双曲线的实轴长和离心率.
(2)求双曲线的焦点到渐近线的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a0bd4bd9985f1e367c100b453ed03f.png)
(1)求双曲线的实轴长和离心率.
(2)求双曲线的焦点到渐近线的距离.
您最近一年使用:0次
2 . 求下列不等式的解集:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/873efdab636413db63f1985e7afcdb0a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c766d73ccf5b919d1640d8c1a8c640f.png)
您最近一年使用:0次
2020-02-07更新
|
582次组卷
|
2卷引用:天津市河西区2018-2019学年高二上学期期末数学试题
3 . 已知复数
.
(1)当
时,求复数
的模.
(2)若复数
为纯虚数,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a136ea697387c091d0d0b01e261ba55.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(2)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
4 . 已知正实数
满足
,则
的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69582b1a383cda899bfae292812f69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2ac8300c2913e283dd592911e37577.png)
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5 . 在空间直角坐标系中,
,
,且
,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13b6c4fe0162312bca4200d46d346a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d24c6eb8d046485c797eeee7a43072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6fedd91906eccb84b1a3a5795723dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4760efe895f24c3a8f6b18d5725256dc.png)
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6 . 若“
”是“
或
”的充分不必要条件,则实数
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86474b8b559afef08fa4ea228f84b77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f417f76e2e7eb5231d8e90fb85c5b17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee18d7a40f7a7e0dc85b1bd75bf750c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-02-07更新
|
313次组卷
|
4卷引用:天津市河西区2018-2019学年高二上学期期末数学试题
7 . 已知椭圆
上一点
到椭圆的左焦点
的距离为3,点
是
的中点,则点
到坐标原点
的距离为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80a47fd46072cd717442cb378d431ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
8 . 已知等差数列
的前
项和为
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5493fbcc4fe76f31ff7820ab368b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc4e70b360f988fdbd92300ab22c4613.png)
您最近一年使用:0次
9 . 已知复数
的共轭复数为
,
,则复数
的虚部是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664b5918ae5113eb36ed714043ac525e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
您最近一年使用:0次
10 . “
”是“
”的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb54b1b3617ebc502cb44194cbcd1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次