1 . 如图,已知椭圆
,点
是抛物线
的焦点,过点
作直线
交抛物线于
两点,延长
分别交椭圆于
两点,记
,
的面积分别是
.
![](https://img.xkw.com/dksih/QBM/2020/8/8/2523556491345920/2524883399974912/STEM/92c99d5328e7466fa709aaee57dba8fa.png?resizew=260)
(Ⅰ)求
的值及抛物线的准线方程;
(Ⅱ)求
的最小值及此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba375d9ec72546383628b958cb80d4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88cb86c93ab26a63c26c3e85db9ad6d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3637753af5ce86be9c23a9beb6b5067.png)
![](https://img.xkw.com/dksih/QBM/2020/8/8/2523556491345920/2524883399974912/STEM/92c99d5328e7466fa709aaee57dba8fa.png?resizew=260)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2 . 已知数列
满足
,
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)证明:
①对任意的
,
;
②
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6545b8eca1c4223ed701a199a85683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26df1305e3ce70b3d4addf2536e421c.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(Ⅱ)证明:
①对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cccb957130c26e7dfed0d44056158f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4687bb5a80a19e3b82515f239e37786c.png)
您最近一年使用:0次
2020-07-04更新
|
726次组卷
|
2卷引用:浙江省宁波市宁海中学2019-2020学年高二(创新班)下学期高考模拟数学试题