已知椭圆C:x2/a2+y2/b2=1（a＞b＞0）的离心率为e=√2/2,过焦点且垂于长轴的弦长为

My english is not good. Can you help me? No p.什么 第4题求答 paper and printing havebeen used for ages翻译 Keep on go on continue 有什么区别 Perhaps people have used it for a century 第四题怎么连 What.do.you.do.I.Can.Seet.to.you.中文意思 10个人站成一排,其中甲、乙、丙3人恰巧站在一起的概率为 第四题怎么办 You needn`t worry about they.这句话哪错了?这句话哪个词用错了?我看着不太对 比萨斜塔实验是真的吗?如果是真的那为什么俩个铁球落下的速度是一样快的 But this does not matter,for,as he has often remarked,one is never too old to learnfor在这里是什么用法,为什么用了两个","为什么for前后都用了“，” but this does not matter,for,as he has often remarked,one is never to old to learn然后为什么前后加标点 什么是完全平方 Needn't + do还是+ to do 求 Ne Yo的never knew I needed 歌词 we all join the school spots clubs 翻译成汉语 求never knew i needed中文歌词NE YO的. Some try out for the school teams,___ others join school sports leaguesA whileB untilC when说明理由 it is easy for me to( )which pen is mine.为什么填say we all join the school sports clubs.翻译 加利略在比萨斜塔上,做的实验是错误的!加利略在比萨斜塔上,做的实验是,同一密度,同一形状,不同质量的两个物体从同一高度的高空同时落下,是同时落地的,我想是不可能的,我们都知道G是重 已知数集A={a1,a2,…,an}（1≤a1＜a2＜…an,n≥2）具有性质P；对任意的i,j（1≤i≤j≤n）,aiaj与两数中至少有一个属于A．（I）分别判断数集{1,3,4}与{1,2,3,6}是否具有性质P,并说明理由；（Ⅱ）证明 已知数例{An}满足a1=1,a2=2,A(n+2)=2An+A(n+1)(1)求a3,a4,a5 （2）猜想这个数例的通项公式,并验证此通项公式是否满足递推公式. 已知数集A={a1,a2,…,an}（1≤a1＜a2＜…an,n≥2）具有性质P；对任意的i,j（1≤i≤j≤n）,aiaj与aj除以ai两数中至少有一个属于A,则称集合A为权集则 A1,3,4为权集 B1,2,3,6为权集 C权集中元素可以为零 D 已知数集A=(a1,a2,…an}(1=a1 特别想欣赏,三国演义读后感作文400字,有劳呵 This is the only way _____ to the Hot Spring Resort.A.to lead B.leading选哪一答案好 Work is a path __leading__ to the eternal soul. David pointed to a path which he thought would probably leading to a village.帮忙分析句子成分结构David pointed to a path 是主句 ,which引导定语句 which he thought ,那么would probably leading to a village没有主语,怎么理解呢 keep on 和go on的区别用法上有何不同 If you compare British football _______American football,you'll find many differences