23-24高一上·全国·课后作业
解题方法
1 . 图象是以
为顶点且过原点的二次函数
的解析式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a119557e8b9fcb7196868a1262daf431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 . 已知
是一次函数,若
,则
的解析式为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bce900714189421e86a2078d5038aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af8521665cd2ceb2862a631bc9d8a8c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bce900714189421e86a2078d5038aa.png)
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2023-11-06更新
|
535次组卷
|
3卷引用:【第二课】3.1.2函数的表示法
名校
3 . 解答下面两题
(1)已知
,求
的函数解析式;
(2)已知函数
是一次函数,若
,求
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95e7eb03a207800992dc7dec12781f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9133a1589db2109f39df70525c743275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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2023-10-30更新
|
884次组卷
|
3卷引用:【第二练】3.1.2函数的表示法
解题方法
4 . 某同学高三阶段12次数学考试的成绩呈现前几次与后几次均连续上升,中间几次连续下降的趋势.现有三种函数模型:①
,②
,③
(其中
为正常数,且
).若要较准确反映数学成绩与考试次序关系,应选____________ 作为模拟函数(填序号);若
,则所选函数
的解析式为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d02d5f9a314d53c4b67b8f9b7b8466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f99ef551178c6b950ac9d855c0216d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d86fd5c8e39ac0307bf35fae96635e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5029180d358fd5c6957bef63623eedec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d703c6dfc3321dc585d0d2c90cdfc8a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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解题方法
5 . (1)已知
为二次函数,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
____________ .
(2)已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88cc5b61b0bfa1a8b6ef0efb8655bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee11573c1058b16b8f6552a739c69b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
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6 . 已知函数
是正比例函数,函数
是反比例函数,且
,
.
(1)求函数
和
的解析式;
(2)判断
的奇偶性;
(3)求函数
在
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0398b85069cfe90af690033937a8e0fb.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aae37cac299cbe3ccac181b2175287f.png)
(3)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aae37cac299cbe3ccac181b2175287f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
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解题方法
7 . 设
为一次函数且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9133a1589db2109f39df70525c743275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54b6a060d6c51a328341df76013bd89.png)
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8 . 长途汽车客运公司规定旅客可以随身携带一定重量的行李,如果超过规定,则需要购买行李票,行李费用y(元)与行李重量x(千克)之间的关系图象如图所示,当最多携带____________ 千克的行李时不收费用.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/31/61b15fff-8336-4009-90d1-3fa15a1f3480.png?resizew=158)
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2023-08-29更新
|
84次组卷
|
2卷引用:北师大版(2019) 必修第一册 数学奇书 学业评价(十五)生活中的变量关系
9 . 已知对数函数
的图象过点
.
(1)求
的解析式;
(2)解方程
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b96c517884adfe20128cce3ee27ff2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)解方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a73db674d29eae8f8921eff5944983.png)
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10 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5017b46ee71ee28ab520741d6169ed.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b469af7e65164f77399f1ceb57ad47.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f3bf108455513aeff1c0c6ab5947ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5017b46ee71ee28ab520741d6169ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b469af7e65164f77399f1ceb57ad47.png)
您最近一年使用:0次