四川遂宁

设F（X）是以T为周期的函数,则函数F(x)+F(2x)+F(3x)+F(4x)的周期是什么? 设f(x)是一周期为T的函数,则f(x)+f(2x)+f(3x)+f(4x)的周期是几T? 设f(x)是以周期为T的函数,则f(x)+f(2x)+f(3x)+f(4x)的周期是什么. 看看这个英语短文有无语法错误?The Best means of transportation（题目）nowdays,with rapid developmentof our society,there is no doubt that the growing number of peoplehave the private car.but the pritatecar pose a great problem to our 已知定义域在[-2,2]上的偶函数f(x)在[0,2]上围增函数,若f(x-1) 已知函数f(X)是偶函数,其定义域为(-1,1),且在[0,1)上为增函数,若f(a-2)-f(4-a2) 2x+23×4=134 2x+23*4=134要过程解方程 方程：x+4是方程（）的解.23+x=28 2x-3=5 2x/8+16 希望帮帮忙,一篇英语短文.假如你是Tom,明天你要搬家,但你担心自己忙不过来,于是你给你的好友Mary发了一封电子邮件,请求她过来帮忙,并请他在来的路上顺便帮你买些面包、苹果、一个西瓜 希望找一篇关于人生的英语短文 请帮我翻译一篇英语小文章,希望能快点,谢谢There is a big supermarket near my home.It's calld Low-price.There is everything in it.I often go there. In it,there is food and drink.There is meat and fruit.There are also clothes,shoes an 已知f(x)是定义域为R的偶函数,当x(大于等于)0时,f(x)=x2(此2是二次方的意思)-4x,那么,不等式f(x+2) 已知f(x)是定义域在R上的偶函数,f(x+3)=-1/f(x),当0 【回答后给分】【初一下数学】解不等式：①x+4/3 - 3x-1/2>1②{2x-5＜0 ,x+1＞2/3x ③{2x-5≥3(x-1) ,x/3 - x-1/2＜1 ④{x/4＜x+1/5 ,2-x≤0 2x+23×4=134解方程 2x＋23×4＝134怎样解方程 高一数学题目定义域在实数R上的函数Y=F(X)是偶函数,当X大于等于0时,f(x)=-4X^2+8x-3求F(x)在R上的表达式 求方程x平方+3x-2=1/x的实数根个数很着急 已知函数f(x)=2x^2-3x+1,g(x)=Asin(x-π/6)(A>0),当o 已知函数f(x)=2x方-3x+1,g(x)=Asin(x-3.14/6),(A不等于0)求当0小于等于x小于等于3.14/2时,求y=f(sinx)...已知函数f(x)=2x方-3x+1,g(x)=Asin(x-3.14/6),(A不等于0)求当0小于等于x小于等于3.14/2时,求y=f(sinx)的最大值 已知函数f(x)=Asin(3x +φ),(A>0,x∈(-∞,+∞),0 已知f(x)=sinx+Asin(x+φ),若函数f(x)为偶函数,且最大值为2 ,求A,φ值,急答案是A=√5,φ=π-arccos（√5/5）,或π+arccos（√5/5） 英语翻译我的家不大,只有父母和我.但实在是温馨!可以这样说,我家的生活像极了旧社会的男耕女织生活.只不过爸爸在商品市场中耕耘,支撑着全家的生活.而妈妈呢,就是传统意义上的家庭内 英语翻译what is fashionFor most people,the word "fashion" means "clothes".But people may ask a question,"What clothes are in fashion?"And they also use the word "fashionable" in the same way.But of course,there are fashions in many things,not onl 英语翻译Most Americans enjoy moving from place to place.For example,they often drive their cars 120 to 160 kilometers away just to have dinner with a friend or even fly to Europe just for watching a football math.In Some states only one person in 英语翻译Do you get angry when someone stands too close to you or talks too loudly Many of us do.What makes us feel uncomfortable about these people?Perhaps it’s about personal space.Some scientists say that humans need a distance between themse 已知函数f(x）=x^2+mx+1在定义域为R的偶函数,若函数g(x)=4x-f(x)的定义域为R,则g(x)的值域为在线等……求过程! 若偶函数f(X)定义域和值域相同 则f(X)可以是? 已知二次函数f（x）满足f（x＋1）＋f（x－1）＝2乘以x的平方＋3x＋5,求f（x）X的平方+1.5X+1.5 若二次函数f（X）满足：f（2X）+f（3x+1）=13X的平方+6x-1.求f（x）的解析式解题过程 已知f(x)为二次函数.且f(x+1)=x平方-3x+2,求f(x)