如图,抛物线
与直线
相交于点
,
,直线AB与
轴相交于点
.
(2)点
是抛物线在直线
下方部分的一个动点,过点
作
轴交
于点
,过点
作
轴交
于点
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e71e5556367a7ded46fcdcaf2eee5bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ba793283da4a8942777027c49ac757.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99673415af51dedd6f4e9f8d71dee849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2672a1a92c09f2268628046bf6afbc01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea3b205487c7eb4fc64d886dc80632e.png)
更新时间:2024-06-08 19:34:26
|
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解答题-作图题
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适中
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【推荐1】数学兴趣小组研究某型号冷柜温度的变化情况,发现该冷柜的工作过程是:当温度达到设定温度
℃时,制冷停止,此后冷柜中的温度开始逐渐上升,当上升到
℃时,制冷开始,温度开始逐渐下降,当冷柜自动制冷至
℃时,制冷再次停止,…,按照以上方式循环进行.同学们记录
内9个时间点冷柜中的温度
(℃)随时间
变化情况,制成下表:
(1)如图,在直角坐标系中,描出上表数据对应的点,并画出当
时温度
随时间
变化的函数图象;
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/3168a26a-73d5-4ef9-bdbd-4b93a36f3781.png?resizew=315)
(2)通过图表分析发现,冷柜中的温度
是时间
的函数.
①当
时,写出符合表中数据的函数解析式;
②当
时,写出符合表中数据的函数解析式;
(3)当前冷柜的温度
℃时,冷柜继续工作36分钟,此时冷柜中的温度是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef63ad7b61f3fae0ac81148e7700ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef63ad7b61f3fae0ac81148e7700ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf0d75c5686aabcd63d28bb2a16d8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86fa45a1e85cd2ae90b49d134bf468e.png)
时间![]() | … | 4 | 8 | 10 | 16 | 20 | 21 | 22 | 23 | 24 | … |
温度![]() | … | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | ![]() | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ddebdb9ca8036dee2861888c4e3316f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/7/3168a26a-73d5-4ef9-bdbd-4b93a36f3781.png?resizew=315)
(2)通过图表分析发现,冷柜中的温度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/097feb34a3b09326c7f7eda5eb9c86c8.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/118150b6f4be1583dd1f2b445508688f.png)
(3)当前冷柜的温度
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ef63ad7b61f3fae0ac81148e7700ff.png)
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解答题-问答题
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适中
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【推荐2】如图,已知直线
的图象经过点
,且与
轴交于点C.
(1)求
,
的值;
(2)若点
,判断点D是否在
的图象上;
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3869d30f9dfd644c7feae0acbd2425ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/4/22b69c9c-00c1-4f8b-91de-f9282ab3e51d.png?resizew=143)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0048da4220f3f79467b2c6327a277e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
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解答题-应用题
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适中
(0.65)
【推荐1】某公司在甲、乙两城生产同一种产品,受原材料产地,上、下游配套工厂等因素影响,生产成本不同.甲城产品的成本y(万元)与产品数量x(件)之间的关系式为
,图象为如图的虚线所示:乙城产品的成本y(万元)与产品数量x(件)之间的关系式为
,其图象为如图的实线所示.
(1)求a、b、k的值.
(2)若甲、乙两城一共生产50件产品,请设计一种方案,使得总生产成本最小.
(3)从甲城把产品运往A、B两地的运费(万元)与件数(件)的关系式为:
,
;从乙城把产品运往A、B两地的运费(万元)与件数(件)的关系为:
,
;现在A地需要40件,B地需要10件,在(2)的条件下,求总运费的最小值(用含n的式子表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa841ce5d58b64f747a3c1b69bb20a5b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/72737eba-e079-4080-bcf9-dcb9c2e54cb7.png?resizew=184)
(1)求a、b、k的值.
(2)若甲、乙两城一共生产50件产品,请设计一种方案,使得总生产成本最小.
(3)从甲城把产品运往A、B两地的运费(万元)与件数(件)的关系式为:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebc68dd6c7da43c0032fcc602e66b56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3037b15e9cf2704969892283c101be91.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1299c92c41ff2432e5e1deca9c818dfe.png)
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解答题-证明题
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适中
(0.65)
真题
名校
【推荐2】已知抛物线y=(x﹣m)2﹣(x﹣m),其中m是常数.
(1)求证:不论m为何值,该抛物线与x轴一定有两个公共点;
(2)若该抛物线的对称轴为直线x=
.
①求该抛物线的函数解析式;
②把该抛物线沿y轴向上平移多少个单位长度后,得到的抛物线与x轴只有一个公共点.
(1)求证:不论m为何值,该抛物线与x轴一定有两个公共点;
(2)若该抛物线的对称轴为直线x=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
①求该抛物线的函数解析式;
②把该抛物线沿y轴向上平移多少个单位长度后,得到的抛物线与x轴只有一个公共点.
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解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在平面直角坐标系
中,直线
分别交
轴、
轴于
、
两点,经过
、
两点的抛物线
与
轴的正半轴相交于点
.
、
的值;
(2)求
的面积;
(3)若点
为直线
上一动点,将点
向右平移
个单位长度,得到点
.若线段
与抛物线只有一个公共点,请直接写出点
的横坐标
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b191419668f5db82a99531ae8333c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/993769b494e12c21dff0ee7c53a4a49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](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/b2c21a7abb0c0f192007a62649729d07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-应用题
|
适中
(0.65)
【推荐2】如图,已知二次函数
的图象与坐标轴交于点
和点
.
(1)求该二次函数的解析式;
(2)已知该函数图象的对称轴上存在一点P,使得
的周长最小,请求出点P的坐标;
(3)在抛物线上是否存在点M,使
?若存在,请求出点M的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530a9976281288e0b1e1fb2601ebf18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88c0ceb160e5bf25e81a1f958c2aa1d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/876ed172-4236-430d-8d6a-ffe90a945ada.png?resizew=130)
(1)求该二次函数的解析式;
(2)已知该函数图象的对称轴上存在一点P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
(3)在抛物线上是否存在点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbf761078a4df7104960a299ed2f711.png)
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