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解题方法
1 . 如图,
为双曲线的左右焦点,过
的直线交双曲线于
两点,
为线段的
中点,若对于线段
上的任意点
,都有
成立,且
内切圆的圆心在直线
上.则双曲线的离心率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f98254a6193566587a70c7d95fdabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757942f619e1f8d5296438829fb11b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffdff38505b8c08aad3d1a07661583fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1dd5a3f83a7455eb3630364397accc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1dd5a3f83a7455eb3630364397accc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1362272bf11e7c2db8b7f38c43d1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47444b5fbc4252516d54263062e47c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
A.![]() | B.![]() | C.2 | D.![]() |
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2023-03-09更新
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4卷引用:湖北省八市2023届高三下学期3月联考数学试题
2 . 已知数列
满足:
.
(1)求数列
的通项公式;
(2)求数列
的前10项和
.(用具体数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d51d1112a6772d98766db8c77e8c07.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
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3 . 如图,延长圆
的一条弦
至
,过点
作圆
的切线
,
,切点分别为
,
,
为
上一点,满足
,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/8/26/2794506298269696/2794766067220480/STEM/51ea95e7-3247-47a1-bf68-51c98787b02f.png?resizew=276)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c03febcb625eb74801badae3f98ae8.png)
![](https://img.xkw.com/dksih/QBM/2021/8/26/2794506298269696/2794766067220480/STEM/51ea95e7-3247-47a1-bf68-51c98787b02f.png?resizew=276)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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4 . 剪纸是我国的传统工艺,要剪出如下图“双喜”字,需要将一张长方形纸对折两次进行剪裁,下列哪一个图形展开后是如图的“双喜”字.( )
![](https://img.xkw.com/dksih/QBM/2020/1/23/2383309879435264/2383900745424896/STEM/cc7aacd425fe42daa43a6fb93bac02f3.png?resizew=102)
![](https://img.xkw.com/dksih/QBM/2020/1/23/2383309879435264/2383900745424896/STEM/cc7aacd425fe42daa43a6fb93bac02f3.png?resizew=102)
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:湖北省黄冈市团风中学2021届高三下学期5月适应性考试一数学试题
真题
5 . 已知函数f(x)=x2+2x+a,
,其中x∈R,a,b为常数,则方程f(ax+b)=0的解集为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67ba30a56fecd7297bf7a7f14c82fb2.png)
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