有耐性,有诚心,甲乙两地相距s千米,汽车从甲地匀速行驶到乙地,速度不超过c千米/小时,已知汽车每小时运输成本(单位:元)

higerlei2022-10-04 11:39:542条回答

有耐性,有诚心,
甲乙两地相距s千米,汽车从甲地匀速行驶到乙地,速度不超过c千米/小时,已知汽车每小时运输成本(单位:元)可由可变部分和固定部分组成:可变部分与速度V(千米/小时)的平方成正比,比例系数为b;固定部分为a元
1.把全程运输成本y(元)表示为速度v(千米/小时)的函数
2.为了使全程运输成本最小,汽车应以多大速度行使
主要是第二小问中要讨论的,但是我不知道要怎么讨论?

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40131720 共回答了15个问题 | 采纳率93.3%
(1)y=(bv^2+a)s/v
(2)y=(bv^2+a)s/v
整理得y=(bv+a/v)s
因为:bv+a/v>=2√ab
要使全程运输成本最小
则使bv+a/v=2√ab
即bv=a/v
解得v=√a/b
因为v√a/b 则汽车以√a/b千米/小时行驶
2)c
1年前
金银剃头 共回答了1365个问题 | 采纳率
1. y=(bv^2+a)*(s/v)
2. y=bvs+as/v>=2s*(ab)^(1/2)
在bvs=as/v,即v=(a/b)^(1/2)时取等号。
1年前

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为你提供正确答案:1. This classroom is ten meters long and six meters wide.2. She is very patient and thus very suitable to teaching students.3. As his leg is broken, he can barely move.4. Do you agre...
我想发表一句,别把我得忍耐当做你得?后面不知道怎么写.我想表达得意思是不要把我一而再再二三对你得包容、忍让、耐性,让你得
我想发表一句,别把我得忍耐当做你得?后面不知道怎么写.我想表达得意思是不要把我一而再再二三对你得包容、忍让、耐性,让你得寸进尺、随意妄为.
glassman851年前1
weiweihecgy 共回答了9个问题 | 采纳率100%
别把我得忍耐当做你放肆的资本,别把我得忍耐当做你嚣张得资本
形容老师教导学生很有耐心的词语如题:可以理解为A君教导B君很有耐性的样子。
qazedcrfv1年前2
colineasy 共回答了16个问题 | 采纳率68.8%
苦口婆心 谆谆教导 不急不燥
成语 有耐性,高人进!表示看的意思的成语表示走的意思的成语口才极好的成语形容朋友多,情谊深的成语来源于童话的成语8个字的
成语 有耐性,高人进!
表示看的意思的成语
表示走的意思的成语
口才极好的成语
形容朋友多,情谊深的成语
来源于童话的成语
8个字的成语
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03621231年前1
1802416 共回答了24个问题 | 采纳率79.2%
面面相觑、走马观花、察言观色、明察秋毫
踽踽独行、踱来踱去、不胫而走、熙来攘往
口若悬河、滔滔不绝、舌战群儒、巧舌如簧
高朋满座、情深意笃、相濡以沫、同舟共济
狐假虎威、朝三暮四、黔驴技穷、叶公好龙
一叶障目,不见泰山;鹬蚌相争,渔翁得利
螳螂捕蝉,黄雀在后;不经一事,不长一智
万事俱备,只欠东风;一身正气,两袖清风
金玉其外,败絮其中;一夫当关,万夫莫开
麻烦写几段英文职业目标是什么?(技术支持方向)未来几年的规划?有什么优点(细心,努力工作,耐性,合作能力方面分别阐述)为
麻烦写几段英文
职业目标是什么?(技术支持方向)未来几年的规划?
有什么优点(细心,努力工作,耐性,合作能力方面分别阐述)
为什么要选择这个工作(技术支持)?
对世博的感觉如何?(没去过的情况下)?
帮忙写点英文回答,就是那种空空的都能套上的那种回答,
有什么爱好?(说点挺大众都能套的那种)
Rachle1年前2
cy_08 共回答了20个问题 | 采纳率95%
职业目标是什么? - What is the goal of your career?
I have set many goals for my career. My ultimate goal is to become a chief executive officer, but I realise that I have lots of things to learn before that. I think that the next logical step for me would be to become a division manager. It will teach me leadership skills and a lot of other skills which I can use to better benefit your company and myself.
未来几年的规划? - What are your plans for the next few years?
In the next couple of years, I plan to enter a good university – preferably in USA, Britain or something English speaking environment. This is because English is becoming increasingly important following globalisation and I must improve my language skills in order to meet the demands of the future labour market. I plan to put in a lot of effort into my studies at my university; and also, I plan to make a lot of friends (after all, no man’s an island).When I graduate, I will return to my home country and serve her with what I have learnt.
有什么优点(细心,努力工作,耐性,合作能力方面分别阐述)- What are the positive things about yourself?
I have a lot of positive attributes to myself. The first and foremost is my ability to corporate with others. I believe myself a good team member and a nice person to work with. I hope that this will further increase the efficiency of work in this company. Secondly, I am a hard worker. I have learnt this while I was in school – our teacher gave us a lot of work each day to train our endurance and will at hard work. And I must say that her efforts were not in vain. Lastly, I flatter myself at having a meticulous personality. I like to be organised and neat. And I believe that this is a very important skill that one must possess in the workplace.
为什么要选择这个工作? – Why did you choose this job?
After a careful self-analysis, I have arrived at the conclusion that I can do this job well and that this job is what I need. Firstly, I have all the qualifications this job requires. And I believe that I possess the skills that can make me do this job well: such as neatness, corporation and leadership skills. Secondly, I think that this job is what I have always wanted as a starting point of my life-long career. It is in the industry I am interested in and I believe that doing the job will teach me many valuable things.
对世博的感觉如何?- What do you think about the World Exposition?
The Expo in Shanghai is an internationally renowned event. Although I have not had the opportunity to visit it myself, I have read from the newspaper and heard from my friends that it is really an exciting and interesting event. I have heard that you can see all sorts of interesting things from all parts of the world including ancient Mayan arts and circus from Canada. I have also learnt that it is a low-carbon Expo; this increases my esteem for the organisers as they are concerned about our environment.
有什么爱好?- What are your hobbies?
I have many hobbies. For example, my favourite thing to do is to read novels. I read basically every written story – from the plays of Shakespeare to Harry Potter. I also like to play in ball games, whether it is tennis, volleyball or basketball. And my other hobby might sound a little unconventional – I like to volunteer at the local library as a book organiser. Perhaps it is because I like the calm environment in the local library; and that I can be the first person to know about the new books.
哇,好辛苦.如果满意的话,楼主请记得给分哦.
根据汉语意思完成句子。 1. 那位老师对不太聪明的学生没有 耐性.
根据汉语意思完成句子。
1. 那位老师对不太聪明的学生没有 耐性.
The teacher___ the less intelligent pupils.
2. 你应该对这些孩子耐心点.
You must _____the children.
75127691年前1
东旋 共回答了10个问题 | 采纳率100%
1. has no patience with 2. be patient with