志勇者

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lie in的过去式是lay in还是lied in 我觉得是lay in但书上是lied in请问怎么回事 离散数学:函数f:R---R,f(x)=2x,则f是双射函数吗(R为实数 英语翻译请问有哪个人可以帮我翻译出!1 Who___Sally____(visit)the day after tomorrow 用所给动词的正确形式填空~拜托了~~~ 用所给动词的正确形式填空:1The children (visit)the farm tomorrow afternoon,are not they?请顺便说一说原因 had better do等于什么 lie in 意思:来源于 用法? 英语翻译全句是:but if the person is a relative,then you tolerate it out of a sense of duty,obligation ,or your personal concept of family. hold on to的英文意思 Lions eats meat and small animals改错 The lions eat 40kilos meat.(对40kilos划线提问) 为什么此处要加 lie inThe date indicates that the difference between developing and industrialised countrie how to invest in education and science .(有人当我改错在how前加了lie in为什么这样改?可不可以不加?) cindy in class 3c (be)用所给动词的过去式填空 “You are getting much taller.I can hardly recognize you,aren't you?”的翻译谢谢了, 关于语言学纲要的几道判断题求助1、思维离不开语言,语言也离不开思维.2、抽象的语言是不存在的,都以个体语言的形式存在着.3、绘画和音乐都能表达人的思想感情,是代表语言的符号.PS:1 You would hardly recognize him after his illness baby i cant't live without you And I could hardly recognize you my as my friend.I could,however,recognize you as a criminal求翻译 Alice can hardly recognize Bob.🐭求翻译 无穷级数求和.为什么设x=1/3和x=根号1/3答案不同 帮忙来看一下这个无穷级数怎样求和Sn=1+1/3+1/5+.+1/(2n-1)n趋于无穷大,求Sn怎样证明它是不是收敛的呢,如果收敛值是多少? 无穷级数的求和问题无穷级数的求和函数∑(=1,∞)n*x^(n+1), 如题,碰到级数求和就傻,怎么也不会.400题和真题关于级数的题都看了,可自己做就是做不出来,特别是逐项求导和逐项积分的方法怎么用?最好能详细点. 无穷级数求和问题通项为n^(-4),从n=1加到无穷大, i'm sure you can be a good host 同义句you will ____ ____ ____be a good host ,i'm sure How I w_____I could be a host! 在句子中some 与any 的用法 有情态动词时,句中有some,some变化吗? some用于什么句?any用于什么句? 同义句 I‘m sure I can be a good host.I'm sure ( )( ) a good host 这个无穷级数怎么求和1+b/v+b^2/v^2+b^3/v^3+.+b^n/v^n (n-->无穷) 一道无穷级数求和问题不好意思 问题没打上在做无穷级数求和时,常用的一种方法是,先对X求微分,再求积分(或先积分,再微分),以消去某含N的项。如:(图片 左),其方法就是先在0