已知函数f(x)=2cos(x-派/6)求f(派)的值

There is no excuse for not doing your homework,__ __?完成反义疑问句是填is there吗?为什么?我觉得是填is there，可是后面的答案是isn't there还是可以理解成，你没有不做作业的理由，一个no，一个not，就抵 1：一根绳子,第一次剪去这根绳子的3分之1,第2次剪去剩下的5分之3,第2次剪去的是这根绳子全长的几分之几2：现修320米道路,第一天修了全长的4分之1,第二天修了余下的5分之2,第二天比第一天 Turn left at the end of the street.The post office is on the right,and you can't lose it改错 Who_____ Jack_____(visit) the museum with? There are six play in our team对吗play是应该用原形吗playing对吗? 求一篇How to repay you parents的英语作文.怎样回报你的父母英语作文. discovered的意思 单词discovered的意思 discovered什么意思? We've all heard of Thomas Edison,() who invented the electric light and many other things.A.man B.a man C.the man D.men when you get to the post office,call me.意思 请问大家下六年级上册数学脱式计算题和应用题了解的告诉下哟, When we got to the post office,it ________(已经关门了） 《截拳道之道－李小龙》(Tao of Jeet Kune Do - Bruce Lee)有中文的吗?还有出版么?详细内容 How do you find the lecture by Mr.lee?---____为什么是Very boring? Jeet kune warning C4620: no postfix form of 'operator ++' found for type 'pp', using p那位高手解释一下吧 谢谢了! i'm late.i want to come into the classroom.有礼貌地提出要求i'm late.____ ____come in? I’m late.I want to come into the classroom.(有礼貌地提出要求）I’m late .___ ___ come in? he says Edison inwented the light bulb in the 19th century 改为主动句或被动句 请问大家下六年级上册数学脱式计算题和应用题说出来吧,感受大伙了9e 在家教里人物代号数字99是谁 1.Mary of have long hair. 2.so it is hard to tell whetther they boys or girls. they us me are isthem.be have句号后面是选的 一个勾股数...一个较长的直角边是160.剩下的一个斜边和一个较短的直角边的关系是.斜边是较短直角边的2倍 Doctors are often caught in a ____ because they have to decide whether theyA.puzzle B.perplexity C.dilemma D.bewilderment选择哪一个,为什么 , 家教里每个人的数字代号和守护者的特性 edison invent the electric light 还是edison invented the electric light时态是用现在时好呢还是过去式呢,答案给的是过去式,但是爱迪生发明电灯不可以看成是客观事实吗追问英语中说客观真理用一般现在 勾股数中 ( )作为直角边长( )作为斜边长 勾股数中（） 作为直角边长,（） 作为斜边长,常见的勾股数有3 4（）；5 （）13；7 24 （） 老师写了两个勾股数的构造法给我们.但是这道题只是说一条直角边长为13.但是这条直角边长究竟是勾还是股?请问怎么看?谢谢! Have they __the new type of car before they are put on the market?A.examined B,checked C.inspected D.tested 请说明选什麽,并给出理由.理由要详细.急需!谢谢! 填词 Did the engineer e---------------the machine