1 . 函数
的值域是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f132fc31746371cc8cc7155a8fbef0a.png)
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2 . 已知
,
,
,则y的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3606fd3966dc72e0f8a32047945a86e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/919af37e54128cf09eb6e838f09420b0.png)
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3 . 在数字
和
中,更大的数字是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172370f9adae2e388a4a777ad92ca18f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/013407782cf6bdec227a4e6ad8c9dba7.png)
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4 . 设抛物线
与
相切,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d45d146c1df586e69bad35394a85bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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5 . 求函数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c33d8c876f71b58fa25a3c4f20bae4c.png)
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6 . 对抛物线
,定义:点
叫做该抛物线的焦点,直线
叫做该抛物线的准线,且该抛物线上任意一点到焦点的距离与它到准线的距离相等.运用上述材料解决以下问题:
如图,已知抛物线
:
的图象与
轴交于
、
两点,且过点
.
(1)求抛物线
的解析式和点A坐标;
(2)若将抛物线C的图象向左平移4个单位,再向上平移4个单位得到抛物线D的图象.
①设
为抛物线
上任意一点,
轴于点N,求
的最小值;
②直线l过抛物线D的焦点且与抛物线D交于
两点,证明:以
为直径的圆与抛物线D的准线相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa0e961df94bc4cc1c8407ed65f2557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd81b3c7a12b2c2623d4336751e3ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423f5e7781b94f96ff4aac23cba2964d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/7/ab0eb186-9b21-435c-8f0d-4c645bfd9955.png?resizew=343)
如图,已知抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c4cd33c7a1f5d3b5ea44a3e03610c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4715dd5f2139c84d0302095d226302.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若将抛物线C的图象向左平移4个单位,再向上平移4个单位得到抛物线D的图象.
①设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52cbeb9b1c1d637b903cf3e5c7f730f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed953fccffc4f4d133e7a41472127d7.png)
②直线l过抛物线D的焦点且与抛物线D交于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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7 . 已知抛物线
经过点
.设点
,请在抛物线的对称轴上确定一点D,使得
的值最大,则D点的坐标为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44f12ece8a44b5943afbec664e7d40e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8389dc56f2a2e736b50307d04d641b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004dcc4b1ac504ce1c70d11d4b7bce04.png)
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8 . 如图,过抛物线
上一点P作切线l,过O点作l的垂线交
于点Q,
,则
的面积是_________ .
![](https://img.xkw.com/dksih/QBM/2023/2/7/3169696117899264/3169822596808704/STEM/803c4c244ccb41debe2c503c5c4c2f06.png?resizew=335)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592c77c484e727c95cc104c2c291153e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2e3b2eb83eb2fe1119e78f4e6e8eaa.png)
![](https://img.xkw.com/dksih/QBM/2023/2/7/3169696117899264/3169822596808704/STEM/803c4c244ccb41debe2c503c5c4c2f06.png?resizew=335)
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9 . 已知函数
在定义域
上严格单调递增.
(1)证明:函数
至多存在一个零点.
(2)若函数
存在零点
,证明:存在
,使得
对于任意
恒成立的充分必要条件是
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7a19bbab2270fc8e694527e801556cf.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07cbf6c4e062852a2bdee01b9992713b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad65ff0ab0a64844ab78062df2e6ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13747fa9a42164caebe2c9b7c5d06d3a.png)
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10 . 已知椭圆
的焦点坐标为
,若直线l与椭圆
相切,点
到直线l的距离分别为
.证明:
(1)
.
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe6c4c8fffd4c5b21f1d11b26963fcf.png)
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c118b51ab426bc1c1b56179094f146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475a3fdc7b27d5ffa8c864dc478903d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2f1c1409a06278e847e6b573cef254.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fc0e502b29162d63e46d46220cce8e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe6c4c8fffd4c5b21f1d11b26963fcf.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8acbfb924b9d207b057fc6593ffeb9d9.png)
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