随机变量x的分布函数

关于一个背景音乐 The End Is Only The Beginninghttp://www.haoting.com/htmusic/394633ht.htm在1分06秒的位置 有个钢琴零星弹奏的声音这个音乐是在《2012》结尾时出现的特别的耳熟 可我怎么也想不起来在哪里 I used to play tennis,but now I am on the swim team ()A good idea B peopleC thanks D that is all right 求中日翻译软件比较完善的如题,因为工作的地方没有网所以求个比较完善的.谢谢各位了. 31.I used to play tennis and swimming quite a lot,___?a.usedn't Ib.didn't you选什么,怎么分析的? 涉及集合设A={x|x^2+mx+n=0,x∈R},M={x|x=2k-1,k∈N}.若A∩M=φ,A∩Q=A,求m,n的值或m,n满足的条件Q={1,4,7,10} 是否存在实数a,使得关于X的不等式组2x²+（5+2a)x+5a0的整数解的集合是单元素集{-2}?若存在,试求出a的值或取值范围,若不存在,请说明理由 心无城府身如玉,人生无求品自高什么意思? 心无城府 是什么意思? 心无城府才是最大的城府是什么意思?求大神帮助 Marco Polo is/was the greatest explorer in the world. 仁慈怎么造句? 看看,帮妹妹个忙, 求首英文歌!大神进来啊~http://www.gamersky.com/handbook/201209/211704_6.shtml#comment广告过后视频开头那段,感激不尽! 连锁效应怎么造句?急连锁效应的意思是相关的事物发生相应的变化 自己英语不好,怎样辅导孩子英语呀! 小孩英语不好该怎么辅导?本人的英语也欠佳 小孩英语不好该怎么教,我也没什么好的方法 sleep是什么意思 张剑的阅读150 大家做的怎么样? 张剑150篇总共有多少道题 张剑150篇的问题,请教如何利用更有价值! 张剑的150阅读买基础还是提高的?时间只够做一本的,哪本比较好呀? all 和whole的区别 一道英语阅读题（很重要TOT拜托~）Dear LuisThank you for your letter.I read it to a few friends at school.Three other people in my class also have pen friends in South America.They sometimes get letters from their pen friends.One of their 请问before和in front of,in the front of有什么区别 29).What would have happened ______ ,as far as the riverbank?.if Bob has walked farther B.if Bob should walk fartherC.had Bob walked farther D.should Bob walk farther 2010年重庆英语阅读理解Humans are naturally drawn to other life forms and the worlds outside of our own.We take delight in the existence of creatures and even whole societies beyond our everyday lives.This sense of wonder is universal.Look at 括号里的were能改成was吗?为什么?The president elect promised during his campaign to help the poor who (were) mostly homeless. 关于was 和wereWhenHarold and Guillermo (was,were) running to the gym,the coach yelled at them to slow down.The two science teachers or Mr.Simmons (was,were) going to callthe state legislators.这两道题怎麽做? 这里到底是用was还是wereif i were your gf,even just for a day or,if i was your gf,even just for a day?是用were比较正统么?why? 阮籍故事 阮籍之死