收敛级数加发散级数

Can you sing English songs?根据上句完成下句,使上下两句意思一致_____ you _______ ______ sing English songs? can you sing an English song?中谓语是 —（ ）you sing an English song?—Yes,I can.a.Can b—（ ）you sing an English song?—Yes,I can.a.Canb.CouldC.Are able to (x-y+5)(x+y)咋解?额 我忘了(x-y+5)(x+y)=0 ……………… 求适合下列条件的双曲线的标准方程2)顶点间的距离为6,渐进线方程为y=正负3/2X 连词成句:six,is,morning,it,the,in,thirty in the morning,get up,run ,at six ,then ,I ,I ,and 连词成句 一枚硬币掷于地上,出现正面或反面的概率各为1/2；这枚硬币掷于地上两次,都是正面的概率为1/4,可以理解为1/2*1/2；同理,一枚硬币掷于地上三次,三次都是正面的概率为1/8,也可以理解为1/2*1/2*1 求以椭圆4x^2+y^2=4的焦点为顶点,且离心率为2√3/3双曲线的标准方程 已知抛物线y=ax^2+bx+c,集合m=（-2,-1,0,1,2,3,4）a,b,c属于m且a,b,c两两互不相等,则满足条件的抛物线中,过原点的有几条 已知抛物线方程为y=ax平方+bx+c 集合M=（-2,-3,0,1,2,3,4）且abc两两不相等 求满足条件的抛物线中 过远点的抛物线有几条? I can sing an English song for them对an English song 提问 I can sing an English song改为一般疑问句 They often get up at six in the morning. I want to sing an English song.(根据这个句子提问) 选择 1.They often get up ____ six in the morning.A.in B.on C.at2.We ____ go home until 5:30 every day.A.don't B.aren't C.doesn't I_____(sing) an English song at present .解释并说明理由 粗心的小明同学将一个代数式减去2x-3y,误当成了加法计算.原来的式子是（）,正确的结果是：（） I_(get)up at six this morning.Then I_(have) breakfast at six thirty.明天交,说出关键词为什么 已知代数式A和B,B等于2x平方-7x-3,求A+B的值,由于粗心,把A+B看成了A-B,结果为-2x平方+7x+11,算出A的正解速度啊,在线等 已知函数f(x)是定义在R上的奇函数,且当x≤O时,f(x)=-x²-3x则不等式f（x-1）＞-x+4的解集是多少 He usually gets up at 6:30 in the morning 改为现在进行时 He usually gets up at 6 o'clock in the morning ,but he had to get up very early yesterday morning..He usually gets up at 6 o'clock in the morning ,but he had to get up very early yesterday morning because he wanted to catch a train.这里的get为什 He usually gets up at 6:30 in the morning.请把这句话改为现在进行时, 2008海南 理数12题解法 08理数第10题的详解设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26.若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值等于8,则曲线C2的标准方程为（A）A.x^2/4^2-y^2/3^2=108山东卷的 2008福建理数(4)函数f(x)=x3+sinx+1(x R),若f(a)=2,则f(-a)的值为 一道幂的乘方运算,需要完整的过程（解释）已知,3^x=√21,求3^x-1+2*3^x-1 回答我问题补充里的问题 着急呀下列说法有误的一项是：( )(2分) 　　A．《生命的意义》选自长篇小说《钢铁是怎样炼成的》,通过作者到烈士公墓,缅怀烈士的英雄业绩,回首往事,道出了人生 您回答我的问题补充我的身份证信息其实就是银行盗用的,但是他们给的答复是贷款担保人姓名写错了!然后取消了这笔贷款的! can sing songs english they连词成句Can在开头 英语连词成句 song,they,not,the,can,sing -------------------------------------------1、song,they,not,the,can,sing(.)-------------------------------------------2、between,is,the,bulidings,what,two(?)--------------------------------------------3