某港口在一天之内的水深变化曲线近似满足函数
,其中h为水深(单位:米),t为时间(单位:小时),该函数部分图象如图所示.若一艘货船的吃水深度(船底与水面的距离)为4米,安全条例规定至少要有1.5米的安全间隙(船底与水底的距离),则该船一天之内能在该港口停留多久?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b207f342d0153301e859535e698a8f.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978532343529472/2980819154616320/STEM/e57f0f58-1125-4b12-97ec-ec236761a0bc.png?resizew=217)
更新时间:2022-05-16 20:35:00
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【推荐1】函数
的部分图象如下图所示:
![](https://img.xkw.com/dksih/QBM/2022/4/6/2952476986286080/2955259714699264/STEM/82327f3f665142188d3802cc8a8cf7c8.png?resizew=173)
(1)求函数
的解析式;
(2)求函数
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c492ab66911ea193ada75bf8b11cb9.png)
![](https://img.xkw.com/dksih/QBM/2022/4/6/2952476986286080/2955259714699264/STEM/82327f3f665142188d3802cc8a8cf7c8.png?resizew=173)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
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【推荐2】已知函数
(
,
,
)的部分图象如下图所示.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/1f22f752-c145-4feb-a9e0-9d9db4f5de4c.png?resizew=132)
(1)求
的解析式;
(2)求函数
在
的单调减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13378be06b6b01bcad1d261ff14e87cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6af3e2115ce0aaf5b99ac70c4441d1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/1f22f752-c145-4feb-a9e0-9d9db4f5de4c.png?resizew=132)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
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【推荐1】如图,风轮的半径为40m,风轮中心
距地面的高度为50m,风轮做匀速转动,每3min转一圈,风轮上的点
的起始位置在最低点处.已知在时刻t(min)时点
距离地面的高度![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056e9db2f4a967e3cc4bfe486a427d02.png)
,求2006min时点
距离地面的高度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056e9db2f4a967e3cc4bfe486a427d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f994e527bf7a76626146075de955013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/475b9f12-25b6-4934-8afe-23a31b9a38f3.png?resizew=124)
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【推荐2】已知两个电流瞬时值函数解析式分别是
,
,求合成后的电流
的函数解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7930471fa30aeb680b023ca05358dd68.png)
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