梦见挖掘机

y=f(x)=2x+1是什么意思 y=√(2x+1)的图像是什么 poor relation ...photography was soon treated as the poor relation of fine art,rather than its destined successor.相关题目上给的同义句是photography was not considerd a ture art.谁能把这个句子解释一下呢?photography was soon trea 窗含西岭千秋雪这句古诗中的(含)是什么意思? 窗含西岭千秋雪,门泊东吴万里船诗句的意思 “窗含西岭千秋雪”是谁的诗句﹖ It's exhausted to be initiative for long.You will be breaking down for caring too much afternoon coffee break怎么翻译 "I'm sorry,"he said to the class,"but of you watched carefully enough." A.none B.some C.most D.all选哪一个 I'm sorry,____watched carefully enough,you're all wrong.横线处应该填：a)neither of you b)none of you c)all of you don't d)both of you don't最好翻译一下,再说一下为什么, √(X-1)^2在什么范围内有意义 设X.X+1.X+2.是顿角三角形,求X的范围? spiritual comfort的汉语意思 已知代数式根号2x-6在实数范围内有意义则函数y=x的平方-2x/3可能得到的函数值是.)A0 B3 C11/2 D7 什么是spiritual obsession 短文改错 I found out my mistake only after you and your wife have left.为什么要把have改为had? 第二题请会写的人给我几个参考答案 40人做题.第一题做对32人,第二题做对24人,两道题都做对的多少人? I have r____ my mistake. 若两等差数列an,bn的前n项和的比sn:sn'=5n+3/2n+7,则a5:b5 酒店提供早餐吗?这句话英语怎么翻译?谢谢谢谢谢谢! 早餐餐厅 英文怎么翻译 英语翻译 1.那家酒店给我们提供大房间以及早餐 2.这篇文章该以什么来头呢? 已知y=f（x）定义在R上,满足f(x)+f(-x)=0,且x≥0时,f(x)=2x-x²（1）求x＜0时,f(x)的解析式（2)是否存在这样的正数a、b,当x∈[a,b]时,g(x)=f(x)且g(x）的值域为 [1／b,1／a],若存在,求出a,b的值,若不存在, ____ and angry,Tony rushed out of the room.A.Shocking B.Shocked C.Being shock D.Shock sshock的形容词形式shocked和shocking的区别? it’s shocked还是shocking for sb to do 已知,x1,x2,x3的标准差为2,则数据3x1+2,3x2+2,3x3+2的方差是 若两个等差数列{an}、{bn}的前n项和分别为An、Bn,且满足An\Bn=4n+2\5n-5,则a5+a13/b5+b13的值为? 若两个等差数列｛an｝、{bn}的前n项和An、Bn,且满足An/Bn=(4n+2)/(5n-5),则a13/b13 life is education是什么意思 若两个等差数列{an}、{bn}的前n项和分别为An、Bn,且满足An\Bn=4n+2/5n-5 a13/b13 等于多少 ?希望有很详细的解题步骤和思路 谢谢