已知函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/6723927e-64d6-468e-b7bc-2f5abf224178.png?resizew=203)
(1)写出
的解析式.
(2)当
时,是否存在实数a使得关于x的方程
有两个不等实根?若存在,求出实数a的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b7acc78520f10b241b222a78a9fc2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/6723927e-64d6-468e-b7bc-2f5abf224178.png?resizew=203)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
更新时间:2021-07-12 16:38:02
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适中
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名校
【推荐1】已知函数
.
(1)方程
的一根在区间
内,另一根在区间
内,求实数m的取值范围;
(2)方程
的两个不等根都在区间
上,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd6c6ee9b10c6739b520bc46ed5f2a11.png)
(1)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad42625f296d2a4b65180e2f7b776beb.png)
(2)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a7a4a037a4dfe973f1eb683d93d799.png)
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【推荐2】已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa785aabe81c50f51a10cd40b056746.png)
(1)若函数
在区间
上存在零点,求实数a的取值范围;
(2)若对任意的
,总存在
,使得
成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939b11c9a275adcd01cdf818d11b5cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa785aabe81c50f51a10cd40b056746.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a50188f84f379b3d0418c54cbade7d7.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f32052a47a062cb6f7d6628bbd1136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825cc31e88bd6aad2820fee76c0d2d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8fa71e4dfae1dc69a4b331fccd2368.png)
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【推荐1】如图是函数
的部分图象,已知
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/67c5ef90-40b3-42b2-bcff-fce1038afec3.png?resizew=227)
(1)求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea298a28004f74c4f1b94513df12b19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2596ac1a8301e39179b80fbd3bd3169.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/23/67c5ef90-40b3-42b2-bcff-fce1038afec3.png?resizew=227)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f64be7074f494b7f0c8eb5a91148e90d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
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【推荐2】函数
的部分图像如图所示.
的解析式;
(2)若
,求
的值;
(3)若
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ffd082d7fd097092d59b2ae4fde852f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27010021129259f849dc0d0fb42642a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c46d4adcf012dd489b774aa90734fa.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b10f0cec1f3becd24f2e486e1422aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐3】已知
、
、
、
是函数
一个周期内的图象上的四个点,如图所示,
,
为
轴的点,
为图象上的最低点,
为该函数图象的一个对称中心,
与
关于点
对称,
在
轴方向上的投影为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/a4e4dcba-8183-4fc6-88eb-6682ac4dff58.png?resizew=149)
(1)求函数
的解析式及单调递减区间;
(2)将函数
的图象向左平移
得到函数
的图象,已知
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279ed988161e138ad9e68194e89e369e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103f0b565506b084cd62c1bc2acf092c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ed9c2e9fabbfc63733bae8fa079d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/a4e4dcba-8183-4fc6-88eb-6682ac4dff58.png?resizew=149)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd5ea4a23c1bfda6bea040d0f9b1529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aca7d3bd93584103a48bc8608733018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4102bb274acf91471a489c3982d7889.png)
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