名校
解题方法
1 . 已知函数
.
(1)若
,解关于
的不等式
;
(2)若不等式
在
上有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238004df3dc97bb5c19e0dd5760956e4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d49443243d30fa8102734f7b554dd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e95bce05d469d84480868706d4ad3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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名校
2 . 已知关于
的不等式
的解集为
,则下列选项不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca12e94ff408257d05a4fdc213a87cb5.png)
A.![]() | B.不等式![]() ![]() |
C.![]() | D.不等式![]() ![]() |
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解题方法
3 . 将函数
图象上的点
向左平移
个单位长度得到点
,若
在函数
的图象上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74cae2ca85e5fcce4451ebbfa8ee830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2998b15e4dabf5d80e43c6e344c7be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdb19d4fbe1a03d7e64f03e6c0bf0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881eb05d2adcae4fcb05e4e18817b5a.png)
A.![]() ![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
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解题方法
4 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf5d9dd0dae4f03c152d5186b9aa934.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 若扇形的圆心角为
,弧长为
,则该扇形的半径为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b3a91ccf6028608cd03df7072f6536.png)
A.3 | B.4 | C.5 | D.6 |
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6 . 记函数
的最小正周期为
,已知
,且
.
(1)求
的值;
(2)已知
是函数
在
上的两个零点.
①求实数
的取值范围;
②若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/284bcf47b4729a4397c6ba8a9dc556b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71326470da9b871886ca67e752eb97d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8e5fb34666c141b74f015cd522222c1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29145ea38299ebe4c2424013b73e2043.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d01dc2d99655cf7598837cb0886166ed.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca17027606d346773699e1527ce8e566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5438613cda89232a531a69da49dee747.png)
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7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4ba784116a3c5f7754007f486b19fb.png)
的图象关于点
对称,且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4ba784116a3c5f7754007f486b19fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8994bc6c1c192e9153b755719d63790e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39567d4e6efd7dd3dc2e444d05f50835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50173932116b981a4d1cdc94935a0d14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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8 . 下列说法中正确的有( )
A.任意锐角![]() ![]() |
B.任意锐角![]() ![]() |
C.存在锐角![]() ![]() |
D.存在锐角![]() ![]() |
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9 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62f7ee6fb85d2475d9689b3b70fdf622.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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解题方法
10 . 已知
为钝角,
.
(1)求
的值;
(2)若锐角
满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b91735c1a4b932faf4a7e4847192da.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a0d23ef2743660e90a21158a22e696.png)
(2)若锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27aa2b8633a8b3b6e5aa451c0b6cb9d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfea1e888676a13ad69c72fba0405ea.png)
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