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11个数里选7个数,无顺序的排列,一共有多少种情况?能不能具体给出? 把49个数任意取7个不同的数排列成一组,能组成多少组 已知函数f（x）=2sin^2（π/4x+π/4）1 把f(x)解析式化为f(x)=Asin(ωx+φ)+b的形式, 2 计算f（1）+f（2）+.+f（2012）的值 要过程 When you find something,make a note___ it's found,and do a drawing in your note book.为什么不能填no matter wherever,一定要作为定语从句来填where呢 已知函数f(x)=2sin(x+π/3)（1）求f(x)的单调增区间（2）当x∈[π/6,π/2]时,求f(x)的值域 When I found you的歌词大意是什么?When I Found You I believe we all have one true love Somewhere in this world,I do When it seemed all my dreams were falling through That's when I found you I believe for every heart that whispers in the dark T When I got into the house,I found Jane ___at the desk and ___something.A、sitting,to write B、sitting,writingC、seating,writing D、to sit,to write顺便各位高手解释一下为什么选择哪个选项,谢谢! 两个圆形都是四等分,用字母和数字分别表示区域,以英文字母数字分别表示两个箭头停的所在区域,如A1,A2求以下可能性的大小,A4,D3,B2或B4, 两个圆盘,一个3等分,一个4等分,分别用数字1,2,3和1,2,3,4表示区域.求以下每小题的可能性的大小：1.两个数字的和为6；2.两个数字的和为偶数；3.两个数字的和大于5回答好的加分！！！！！！ 两个圆形都是四等分,用字母和数字分别表示区域,以英文字母数字分别表示两个箭头停的所在区域,如“A1,A2,…”求以下的可能性大小. 1.A4 2.D3 3.B2或B4 有哪位高手知道,在此谢 将圆盘10等分,指针落在偶数区域的可能性是___ 1,3,5,7取5《5个数字中1357可累加》个数加起来等于20?求结果. ( )I want to know ___he is goning to come A.if B.that C.what这句话是啥么意思,要选啥,为啥 翻译：I know that you think you know what I said.I know that you think you know what I said. But I'm not sure whether you understood that what you heard is what I meant. - Alan Greenspan you made me feel and you made me realyou made me feel,and you made me real. 已知函数y=2sin(3x+π/3),x属于R当x属于[-2π/9,π/6]时,求函数的最大值与最小值 make me your radio,turn me up when you feel low 是哪首歌里的 已知函数y=1/2sin(3x+6/π)+1求（1）y取最大值时x的值（2）函数的单调减区间和对称中心的坐标（3）写出它的图像可以由y=sinx怎样变换得到 已知函数y=1/2sin(3x+π/6)+1 ,若x∈(-π/3,π/6)求函数的值域 函数y=2sin(2π/3-3x)的递增区间 已知函数y=2sin(π/6-1/3x)1,求它的周期、对称轴、对称中心.2,求它的最大、最小及取最值时相应的集合. 在一个圆盘上十六等分圆,怎样划线?如图 [急]英语口语四人对话话题分别为：1.第1次见面的互相介绍.2.朋友一起去旅行,讨论住什么样的旅馆.3.新年来了,和朋友讨论给父母买什么礼物.4.和朋友间讨论家庭状况,气氛5.和朋友讨论星期天 英语口语对话四个人的关于名人的四分钟左右是四个人的对话关于名人的，不是四个名人 What I want is that you love me 什么意识 Is that ____ you want?A that B that what c what 为什么? I find time ____ very quickly when I do something interesting(选项A goes by B goes off) I find time____very quickly when I do something interesting.A.goes out.B.goes by.C.goes off 英语高手进来下呗I find time goes by wery quickly when I do something interesting.我想起find sb.doing sth.可是为什么goes而不是going（time后） Most of my day is full of lessons and homework.It is very 16 to find time for myself.But when IMost of my day is full of lessons and homework.It is very 16 to find timefor myself.But when I get some 17 time,I have many 18 to do,such as sleeping,going I left the team for a long time,when I returned I find the original feeling,I'm very happy的意思 《西游记》 中红孩儿的人物简介