名校
1 . 设函数
有四个不同的零点,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e42263a20624f6e8118c6d881190ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 设
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f47147d8f451f79025aeb24ea0bbb585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095bf509ce64f46e9e0706f012d86ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4446cb86b21206e4a5bacf27d6980c5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 定义在
上的偶函数
,当
时,
,则满足
的所有
的值的和等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3109bc484b2c1aa6733f29bc9b1f5b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eaeb2ab68a49074d623ffca072fed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fe159137cb710df336eae309371947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知角
的终边上一点
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2f21b1baf0624482fd41d7ba390341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ea05cb92b3a76fef530d2ddb0d8b36.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 集合
中的元素个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d765dd760c7b828d7c152d4265d945.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 命题“
,
”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c17d20b78e71d0cf1c9513d8d37a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4325c07281a313412fdaf61eda4c2ad8.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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7 . 已知直线
为异面直线,
为不重合的两个平面,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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8 . 已知双曲线
的左、右顶点分别A,B,若直线l与双曲线 C的左支交于M, N两点,记直线 MA的斜率为
,直线 NB的斜率为
,直线 NA的斜率为
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b07249c5779b87de9e1d70b514afc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb85b3fa748136b2f6189c55634eb259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87e0c79fdd8e028e234947bd9c4504b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ed63d81a5a9103383e2de0a26243ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cada79783bb8229895fa4d635a284d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c08090ac6bbb54025731947b2bddc80.png)
A.![]() | B.![]() | C.8 | D.![]() |
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解题方法
9 . 在△ABC中, 角 A,B,C所对的边分别为a,b,c, 且
.当
取最小值时, 则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2aa66f20c71359a8877729321c4981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bbc1adfd9fc277ef74e702a08df5340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 过点
作直线l交圆
于点
,
,若
,则点
的横坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328aaba77106396d4ca644c8b7a352e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f25834d8218c53cb975c2a2fe7442a.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/115a1f072a759ceed2ba97026d05e51c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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