生活中常见的长方形

判断下列函数的单调性并求出单调区间 f(x)=2x^2-3x+3 对于不等式1\8（2t-t²）≤x²-3x+2≤3-t²,试求对区间【0,2】上的任意x都成立的对于不等式1\8（2t-t²）≤x²-3x+2≤3-t²,试求对区间【0,2】上的任意x都成立的实数t的取值范围 英语翻译My father had returned from his business visit to London when I came in,rather late,to supper.I could tell at once that he and my mother had been discussing something.In that half-playful,half-serious way I knew so well,he said,"How would 英语翻译Graduate Employment The recruiting fair in the above drawing is filled with young graduates each holding a pile of resumes in their hands.Around a desk in the front of the drawing,there are dozens of students waiting to hand in their resu 求下列函数奇偶性：（1）f（X）=3X+1 （2）f（X）=根号下X （3）f（X）=X+2X分之1 判断函数f(x)=2x|3x|(x∈R)的奇偶性和增减性我知道是奇函数,可是不会做增减性 已知函数f(X)=|3x+2|-|3x-2|,判断函数f(x)的奇偶性 设定义域在[-2,2]上的偶函数f(x)在区间[0,2]上单调递减,若f(1-m) 2X^2-4X-5=0 求解此方程, 麻烦解个方程:2x+3x=10 方程2x-3=3与方程1-(3a-x/3)=0有相同的解,则a=( 这个.困扰了好半天- ）A.13 B.2 C.1 D.0 观察下列不等式:①x²>4;②x²-3x+2≤0;③(x-1)(x+1)>2根号2x.回答下列问题：（1）这些不等式除了不等号两边都是整式外,还有哪些共同特征?（2）请类比一元二次不等式的定义给这些不等式 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