The function f,defined by f(t)=6+cos(t/40)+3sin(7t/40),is us

水袖嫣然2022-10-04 11:39:541条回答

The function f,defined by f(t)=6+cos(t/40)+3sin(7t/40),is used to model the velocity of the plane,in miles per minute,for 0≤t≤40.According to thhis model,waht is the acceleration of the plane at t=23?What is the average velocity of the plane,in miles per minute,over the time interval 0≤t≤40?

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bingyu322 共回答了17个问题 | 采纳率88.2%
据定义,加速度就是速度对时间的微分,故加速度函数为
a(t)=f'(t)=-1/40*sin(t/40)+21/40*cos(7t/40),把t=23带入即得23分时的加速度
a=-0.347miles per minute^2
路程是速度对时间的积分,因此平均速度为
v1=1/40*∫(0→40)f(t)dt=(6t+40*sin(t/40)-120/7*cos(7t/40))|(40→0)=6.97miles per minute
1年前

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to compute the width and height of a line of text using the current font 用这种字体去计算一行文本的高和宽.using the current font 作状语,但是表方式的.
求js面试题答案第二题:请说明要输出正确的myName的值要如何修改程序?foo = function(){this.m
求js面试题答案
第二题:请说明要输出正确的myName的值要如何修改程序?
foo = function(){
this.myName = "Foo function.";
}
foo.prototype.sayHello = function(){
alert(this.myName);
}
foo.prototype.bar = function(){
setTimeout(this.sayHello,1000);
}
var f = new foo;
f.bar();
kmrqc1年前1
qinjian9902 共回答了23个问题 | 采纳率91.3%
foo = function(){
this.myName = "Foo function.";
}
foo.prototype.sayHello = function(){
alert(this.myName);
}
foo.prototype.bar = function(){
setTimeout(
(function(s){
return function(){
s.sayHello()
}
})(this),1000);
}
var f = new foo;
f.bar();
帮忙查一下ei检索号,Structure and potential energy function of PuGa m
帮忙查一下ei检索号,Structure and potential energy function of PuGa molecule
shadowecho1年前1
在这部电 共回答了17个问题 | 采纳率100%
Search Results
0 records found in Compendex for:((Structure and potential energy function of PuGa molecule) WN All fields),1969-2011
Your search retrieved 0 records.Check to make sure that you have entered valid search terms,or try broadening your search.
没有检索号
谁能帮忙做下英文单项选择题1.What is the function of the meetings in which
谁能帮忙做下英文单项选择题
1.
What is the function of the meetings in which oral reports are presented to clarify previously distributed written information?
A.To develop new ideas.
B.To inform.
C.To delegate work.
D.To persuade others.
满分:2 分
2.
If a job applicant has considerable job-related work experience,when preparing a resume,he should organize the work experience section by ________.
A.job title
B.functional order
C.by date
D.employer
3.
A graph provides a means for ________.
A.comparing data
B.showing proportions
C.showing geographic relationships
D.illustrating a procedure or process
满分:2 分
4.
If someone talks about the pitch of a voice,he is referring to its __________.
A.accent
B.clarity
C.loudness or softness
D.highness or lowness
5.
What part of the face provides the most nonverbal feelings?
A.The mouth.
B.The eyes.
C.The lips.
D.The color of the face.
满分:2 分
6.
One of the best ways to overcome poor listening habits is to _______________
A.use spare time to analyze,evaluate and review the message
B.judge the speaker as quickly as possible
C.listen only when new information is presented
D.ask a lot of questions
7.
A functional order resume emphasizes ______________
A.the order of jobs held
B.skills and capabilities
C.education
D.the functions performed on a job
满分:2 分
8.
Which of the following is a good example of an apology made to a customer for a mix-up in an order?
A."I'm sorry about that.Let me see what you should have received and I’ 11 fix it for you."
B."Oh I' m sorry,that must have happened during the night shift.I can fix that for you."
C."Well,I didn’t take your original order,but I can place a new order for you."
D."Oh,one of the trainees probably input the order incorrectly.Sorry about that."
满分:2 分
9.
Effective listeners ____________________.
A.share the responsibility for communicating with the sender
B.listen and face elsewhere if they already know about the topic
C.evaluate the sender and act accordingly
D.take notes on everything that is said
10.
The three main parts of an oral presentation are ___________________
A.an anecdote,a body and a summary
B.an introduction,a body and a summary
C.a quotation,an intermediate and a closing
D.an introduction,a body and a closing
musicgogo_20001年前2
YUSI1211 共回答了15个问题 | 采纳率100%
1D2A3C4D5B6A7B8A9A10D
Function rooms are set up at least 30 minutes before the sta
Function rooms are set up at least 30 minutes before the starting
zarchery1年前3
tianjiao08 共回答了21个问题 | 采纳率90.5%
活动会议室至少要提前三十分钟准备好.这里的SET UP不能翻译成成立.
C++中 0^0,报错,reference to overloaded function could not be re
C++中 0^0,报错,reference to overloaded function could not be resolved;did you mean to call it?
lzg7171年前1
quietfountain 共回答了15个问题 | 采纳率100%
^按位异或(Xor)是一种逻辑运算,对应位相同时为假,不同时是真的.
基本规则:
元 元 值
0 0 0
1 0 1
0 1 1
1 1 0
在计算机中,是二进制来计算的.
没有专门的二进制输出.
0000 ^ 0000 = 0000
翻译 发挥作用最好用到 function
凌蓝玉1年前2
李一男他叔叔 共回答了22个问题 | 采纳率95.5%
play a role in
play one's part in
perform a function
英语翻译1 Marketing is an organizational function and a set of p
英语翻译
1 Marketing is an organizational function and a set of processes for creating,communicating,and delivering value to customers and for managing customer relationships in ways that benefit the organization and its stakeholders
2 Strategic planning is the managerial process of creating and maintaining a fit between the organization’s objectives and resources and the evolving market opportunities.
3 The process of anticipating future events and determining strategies to achieve organizational objectives in the future.
4 A product used to manufacture other goods or services,to facilitate an organization’s operations,or to resell to other consumers.
5 Strategic planning is critical to business success.In a strategic move to regain market share as a retailing giant,sears purchased land’s end,one of the most successful catalog retailers in the united states.
6 A product used to manufacture other goods or services,to facilitate an organization’s operations,or to resell to other consumers.
7 A specific version of a product that can be designated as a distinct offering among an organization’s products.
8 A set of interdependent organizations that ease the transfer of ownership as products move from producer to business user or consumer.
9 The connected chain of all the business entities,both internal and external to the company,that perform or support the logistics function.
10 Retailing means all the activities directly related to the sale of goods and services to the ultimate consumer for personal,non-business use.
11 The marketing function that evaluates public attitudes,identifies areas within the organization that the public may be interested in,and executes a program of action to earn public understanding and acceptance.
12 Marketing activities--other than personal selling,advertising,and public relations--that stimulate consumer buying and dealer effectiveness.
wxy_131年前3
wuya1982 共回答了16个问题 | 采纳率100%
1营销是一个组织的功能和一组进程,创造,沟通,并为客户提供价值和客户关系管理方式,组织及其利益相关者受益
2战略规划,是创造和维持一个组织的目标和资源,不断变化的市场机会之间的契合的管理过程.
3预测未来的事件,并确定战略,以实现组织的目标,在未来的过程.
4用于生产其他商品或服务,以促进组织的运作,或卖给其他消费者产品.
5战略规划是企业成功的关键.在恢复作为零售业巨头的市场份额的战略举措,西尔斯购买土地年代末,在美国最成功的目录零售商之一.
6用于制造其他商品或服务,以促进组织的运作,或卖给其他消费者产品.
7作为一个组织的产品之间的不同的提供一个可以被指定产品的具体版本.
8一个相互依存的组织,便于移动产品从生产者到企业用户或消费者的所有权转移.
9所有的业务实体,公司内部和外部的,执行或支持物流功能的连接链.
10零售是指直接关系到最终消费者出售的商品和服务的个人,非商业用途的所有活动.
11市场营销功能,评估公众的态度,确定领域内,市民可能会感兴趣的组织,并执行的行动计划,以赢得公众的理解和接受.
12个营销活动 - 比人员推销,广告,公共关系等 - 刺激消费者的购买和经销商效益.
boost::function0 和boost::function1 什么区别.
翩翩起舞的猪猪1年前1
polo_wang 共回答了21个问题 | 采纳率76.2%
oost中function的出现是为了支持lambda表达式这样的动态结构.
function后面跟的数字,记得是表示参数个数的.function0没有参数,function1带1个参数,比如function1 mypro;
function f=myfun(X) f=0.34*X(1)+0.004*X(2)+0.14*X(3)+0.24*X(
function f=myfun(X) f=0.34*X(1)+0.004*X(2)+0.14*X(3)+0.24*X(4)+0.08*X(5)+0.03*X(6)+6.05*X(7); goal=
function f=myfun(X)
f=0.34*X(1)+0.004*X(2)+0.14*X(3)+0.24*X(4)+0.08*X(5)+0.03*X(6)+6.05*X(7);
goal=[1,1,1];
weight=[1,1,1];
X0=[190;150;120;60;800;1100;4];
b=[0;0;0;0;0;0;0;400;-340];
Aeq=[0.3175;1;0.4762;0.3448;0.3816;0.3704;0];
beq=[990];
lb=[170;135;60;0;700;1000;2];
ub=[250;190;160;60;1000;1300;12];
A=[0.3 -1 0.3 0.3 0 0 0
-0.45 1 -0.45 -0.45 0 0 0
0 0 0 0 -0.65 0.35 0
0 0 0 0 0.58 -0.42 0
-14.6 29.77 -14.6 -14.6 0 0 0
0.01 0 0 0 0 0 -1
-0.02 0 0 0 0 0 1
1 0 1 1 0 0 0
-1 0 -1 -1 0 0 0];
[X,fval,attainfactor,exitflag]=fgoalattain(@myfun,X0,goal,weight,A,b,Aeq,beq,lb,ub)
运行时出现Maximum recursion limit of 500 reached.Use set(0,'RecursionLimit',N)
to change the limit.Be aware that exceeding your available stack space can
crash MATLAB and/or your computer.
Error in ==> optimget at 166
set(0,'RecursionLimit',N)将500 递归限制改大后无法运行
alpha3461031年前1
诚心 共回答了19个问题 | 采纳率100%
f(1)=-p*x(1)-0.3*x(2)-0.3*x(3); f(2)=-0.34*x(4)-0.34*x(5)-0.34*x(6); f(3)=0.5*f(1)
一道VB题,麻烦说明原因.Private Function fact(n As Integer) As Integerf
一道VB题,麻烦说明原因.
Private Function fact(n As Integer) As Integer
fact = 1
Do While n > 0
fact = fact * n
n = n - 1
Loop
End Function
Private Sub Form_Click()
Dim sum As Integer,i As Integer
For i = 4 To 1 Step -1
sum = sum + fact(i)
Next
Print "Sum="; sum
End Sub
输出结果为什么是24?
明明柳1年前1
严肃处理 共回答了18个问题 | 采纳率83.3%
Private Sub Form_Click()
Dim sum As Integer, i As Integer
For i = 4 To 1 Step -1
sum = sum + fact(i)
Next
Print "Sum="; sum
End Sub
你这个过程里的循环只运行了一次,因为你把i 传到过程 fact 里,在fact里,i的值被你改了
If defined replaces the build in add function什么意思?
忙哥1年前2
xiayutian9 共回答了28个问题 | 采纳率92.9%
如果定义附加功能取代建造的
100分+100分4.If y is a function defined as y=√(2x+1),use diffe
100分+100分
4.If y is a function defined as y=√(2x+1),use differentiation to approximate the change in y when x changes from 2 to 2.5
jiajia8410251年前1
btwmh 共回答了16个问题 | 采纳率87.5%
4.If y is a function defined as y=√(2x+1), use differentiation to approximate the change in y when x changes from 2 to 2.5
设 y 为函数,其函数定义为 y=√(2x+1),用微分法求 x 从2到2.5时 y 的变量.
R语言中怎么画自定义函数图像p=function(n,m){N=10^6x=c(rep(0,5),1)z=numeric
R语言中怎么画自定义函数图像
p=function(n,m){
N=10^6
x=c(rep(0,5),1)
z=numeric(N)
for(i in 1:N){
y=sample(x,n,replace=T)
z[i]=sum(y)>=m
}
return(sum(z)/N)
}
当m=2,3,4时,把这三函数在同一个坐标化成散点图,然后拟合曲线!
林京山先生1年前1
秋天的羔羊 共回答了21个问题 | 采纳率90.5%
用curve(function,add=T)试试
Warning:mssql_connect() [function.mssql-connect]:Unable to c
Warning:mssql_connect() [function.mssql-connect]:Unable to connect to server:61.190.43.242 in D:wwwrootit006includeslib_goods.php on line 515
希望别复制给我答案,一定要亲自解决过的,在此拜谢
williamstan1年前1
cyc2006_2006 共回答了19个问题 | 采纳率89.5%
连不上mysql哇,开了吗?
function a ()在js里这是定义(声明)函数afunction a(b)在js里b是参数,它有什么作用,它都起
function a ()
在js里这是定义(声明)函数a
function a(b)
在js里b是参数,它有什么作用,它都起着那些作用
window.onload=function ()
在这段js代码中,function :起着什么作用
window.onload=function () :这句是什么意思
function a(b) :b是参数,这个参数都起着那些参数。在哪些情况下,能用到参数
13579zhuliang1年前1
一名ll者 共回答了12个问题 | 采纳率91.7%
function a(b)
代表定义了一个a函数,并且定义了一个形参 b
在调用a函数时,需要给一个参数 例如: a(2) 或 a('aaa')
方便在a函数中获取参数进行处理
window.onload=function ()
function 是函数的意思 同时js是弱类型语言,有时我们需要用对象时,也可以这样使用
比如
function Person(){
}
var p = new Person();
希望可以帮到你
英语翻译The Protection function are-for start bypassing purposes
英语翻译
The Protection function are-for start bypassing purposes-only active after the class time has expired z.B 10 nach 10 Sekunden
芮米1年前6
防护林 共回答了16个问题 | 采纳率93.8%
将防护功能只开始活跃purposes-only下课后绕过时间结束这件事.10到10 Sekunden B
限制文本框只能输入两位小数怎么限制只能输入两位小数啊?下面的代码是限制只能输入数字和一个小数点function clea
限制文本框只能输入两位小数
怎么限制只能输入两位小数啊?
下面的代码是限制只能输入数字和一个小数点
function clearNoNum(obj){
x05//先把非数字的都替换掉,除了数字和小数点
x05obj.value = obj.value.replace(/[^d.]/g,"");
x05//必须保证第一个为数字而不是小数点x05
x05obj.value = obj.value.replace(/^./g,"");
x05//保证只有出现一个小数点而没有多个.
x05obj.value = obj.value.replace(/.{2,}/g,".");
x05//保证小数点只出现一次,而不能出现两次以上
x05obj.value = obj.value.replace(".","$#$").replace(/./g,"").replace("$#$",".");
这样写可以:
//把小数点后面超过两位的数字替换掉,也就是保留两位小数
x05 var strs = "";
x05 var midd = "";
x05 var count = 0;
x05 for(var i=0;i
fag44d7sf5d451年前1
vv090 共回答了16个问题 | 采纳率81.3%
正则表达式的Pattern是这样的:"^\d+.\d{2}"
^ 表示是开头,就是字符串开头位置
\ 表示的是转义的
所以\d就是d 表示任意一个数字 而在后面加一个+表示 1个或者多个数字
.就是小数点
\d{2} 大括号内包含2意思就是有2个任意的数字.
这样符合这个模型的就是你所需要的两位小数的.
所以你在js中用正则表达式进行对用户输入值的判断,判断模板就是这个.
然后判断js中函数的返回值,如果是true就是符合,那么进行下一步操作
如果为false,那么将文本框的value重置为“”,也可以再增加alert函数提示用户输入格式不对.
英语翻译The institution that bagan to assume the function of a n
英语翻译
The institution that bagan to assume the function of a national govermment during the American revolution was the second continental congress.
A federal system is one in which power is shared between a central authority and its constituent parts with some rights reserved to each.
-----------------------
拒绝翻译机器.
就爱彩票1年前4
mrlujun 共回答了14个问题 | 采纳率92.9%
The institution that bagan to assume the function of a national govermment during the American revolution was the second continental congress.
在美国独立战争期间承担美国政府职能的机构(组织)就是第二次大陆会议组织机构.
A federal system is one in which power is shared between a central authority and its constituent parts with some rights reserved to each.
联邦体制乃是中央与地方各享其权且各有其权的政府体制.
What are the Domain and Range of the function f(x)=-2log(x)-
What are the Domain and Range of the function f(x)=-2log(x)-4?
jinyan100001年前3
love红 共回答了16个问题 | 采纳率87.5%
x∈(0,+∞)
D=(-∞,+∞)
新手python问题Write a function called digit_sumthat takes a posi
新手python问题
Write a function called digit_sumthat takes a positive integer n as input and returns the sum of all that number's digits.
For example:digit_sum(1234)should return 10 which is 1 + 2 + 3 + 4.
(Assume that the number you are given will always be positive.)
这个要怎么写啊,新手不会做了,来求教.
czyjs1年前1
ziyuanlianyi 共回答了15个问题 | 采纳率86.7%
不知道你给的数据是10进还是16进的,两个都写一下好了def digit_sum_16( number ):
con = 0
while number:
con += number 0xF
number >>= 4
return con


def digit_sum_10( number ):
con = 0
while number:
con += number % 10
number /= 10
return con
英语翻译find the average rate of change of the function over the
英语翻译
find the average rate of change of the function over the given intervals
f(x)=x^3 + 1
[2,3] [-1,1]
g(t)= 2 + cos(t)
[0,∏] [-∏,∏]
只有翻译也可以
怎么求不规则曲线两点间的平均值呢?
只有解答也可以
杰儿11年前3
蚂蚁琥珀 共回答了15个问题 | 采纳率80%
翻译:
求以下函数在所给区间的平均变化率
一点上的变化率就是一次导数,平均变化率就是:
对倒数在该区间积分 / 区间长度.
所以,f(x)在[2,3]的平均变化率=[f(3)-f(2)]/(3-2)=19
f(x)在[-1,1] 的平均变化率=[f(1)-f(-1)]/(1+1)=1
g(t)在[0,∏]的平均变化率=[g(∏)-g(0)]/(∏-0)=-2/∏
[-∏,∏] g(t)在[-∏,∏] 的平均变化率=[g(∏)-g(-∏)]/(∏+∏)=0
genomic imprinting-function是什么意思
lluohan1年前1
奔跑的小白 共回答了16个问题 | 采纳率87.5%
genomic imprinting-function
基因组印迹功能
关于导数数学题If the line tangent to the graph of the function f at
关于导数数学题
If the line tangent to the graph of the function f at the point (1,7)passes through the point (-2,-2)then f ' (1) is ( )
A.-5 B.1 C.3 D.7 E.undefined
s不懂1年前1
pling 共回答了14个问题 | 采纳率92.9%
在(1,7)点的切线经过点(-2,-2)
切线斜率k=(-2-7)/(-2-1)=3
所以函数在(1,7)点的导数值为3
于是f'(1)=3
选C
多功能电脑摄像头设计 译成英文怎么译? 在百度在线译是:multi function computer camera o
多功能电脑摄像头设计 译成英文怎么译? 在百度在线译是:multi function computer camera of the design.
请问百度译的对吗?有没有语法错误?如果错了该怎么译?
谢谢!
changdd1年前1
qingtingyaya 共回答了14个问题 | 采纳率85.7%
1.multifunctional computer/PC camera design
2. the design of multifunction computer/PC camera