名校
解题方法
1 .
为公差不为零的等差数列,
是其前
项和,
是等比数列,
是其前
项和,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.对任意![]() ![]() ![]() ![]() |
B.存在![]() ![]() ![]() ![]() |
C.对任意![]() ![]() ![]() ![]() |
D.存在![]() ![]() ![]() ![]() |
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2 . “
为锐角三角形”是“
,
,
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b48895daa87c296d961bfd0d4fd386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d26d4cf3845db4e818f03d64bd05f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442e6fb86ce371e3cdaba4293a98da0f.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
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3 . 下列函数中,是偶函数且在区间
上单调递增的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 在复平面内,复数
的共轭复数对应的点的坐标是
,则
的虚部是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.1 | C.![]() | D.![]() |
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5 . 已知直线
,圆
,下列说法错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e66d661394a74301296312680c1e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01268ac8e838d0f45ccb35bc1d479d0.png)
A.对任意实数![]() ![]() ![]() |
B.当且仅当![]() ![]() ![]() ![]() |
C.对任意实数![]() ![]() ![]() |
D.存在实数![]() ![]() ![]() |
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解题方法
6 . 已知双曲线
的一个焦点坐标是
,则
的值及
的离心率分别为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4bc9716e3dc467c39f75fe3d53ba64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.![]() | B.![]() | C.1,2 | D.![]() |
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7 . 下列函数中,是偶函数且在区间
上单调递增的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 在
展开式中,常数项的二项式系数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92534c64a915c97c0029c384670abd58.png)
A.4 | B.3 | C.2 | D.1 |
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9 . 已知集合
,若
,则
可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb2c3f3fc00d287887c3187cf1fe1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c3056c140df92836ff95dc3a6753ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.1 | C.2 | D.3 |
您最近一年使用:0次
名校
解题方法
10 . 已知点
在边长为2的正八边形
的边上,点
在边
上,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc4ef841ac42e665add45cfc5c6bc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8613aeb43a48921982d8445f3fd65235.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次