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已知x+yi的绝对值=1,其中X,Y均为实数,在复平面内,求表示复数x+yi的点的集合 what kind of l___do you have? Now the iPad is a new kind of computer without k_____ What do you do n_____?At first ,s_____ on the computer.At last ,don't forget to t____off it.-Who is the m_____in your class?-Daming is .It's a good idea fot young people _____(make) travel plans o 已知2x-y/7x+5y=2/3且y≠0,求x/y的值 初二几何题,请对第三小题做着重解答如图,在△ABC中,∠ACB=90°∠A=30°,D是边AC上不与点A、C重合的任意一点,DE⊥AB,垂足为点E,M是BD的中点(1)求证：CM=EM(2)如果BC=31／2设AD=x,CM=y,求y与x的函数解析式, 5个质数相乘=48 如图所示为一大型四边形广告牌,此广告牌要求AB,CD两边所在直线的夹角为30度,AD,BC两边所在直线夹角为20度.你能通过测量∠A,∠B,∠C,∠D的度数来检测这个广告牌是否符合要求吗?若不能,请说 若a,b为实数,且a=√14—2b+√b—7+3,求√（a—b)² 5个质数相乘=48快一点吧 关于复数的. 试用配方法证明;无论x取什么实数,6x-3x²-7的值都小于0急,在线等. 初二几何题2已知,正方形ABCD中,角A等于45度,角MAN绕点A顺时针旋转.它的两边分别交CB,DC(或它们的延长线)于点M,N.当角MAN绕点A旋转到BM等于DN时,易证BM加DN等于MN （1）当角MAN绕点A旋转到BM不等于DN (1/2)已知a-bcos2x(b>0)的最大值是2分之3,最小值是-2分之1,求y=-4asin(3bx+3分之C)的周期、最大值和最...(1/2)已知a-bcos2x(b>0)的最大值是2分之3,最小值是-2分之1,求y=-4asin(3bx+3分之C)的周期、最大值和最大 选择合适的形式填空,注：能解释理由的,一,选择be 动词的适当形式填空. Last month a large number of Japanese _________ sick.My brother as well as I _________ fond of swimming.二,将括号内的动词变成适当 一道高中关于复数的数学题 初中英语的句子填空1Their skin soon ____(become) too small so they must shed it in order to get bigger.2Permanent magnets are materials in which this magnetic effect occurs ______(填介词) the natural movements of electrons.3When smokers wh 初中英语填空与选择1.There are 2000 boys in this school,and()(他们当中五百人）like playing football.2.适当形式填空Is the book on the desk()(you)?3.选择（）do you think can do it?A.Who B.Whom C.Why D.How4.Please keep together 初二几何题2题1、在三角形ABC中,角c等于90度,bd平分角abc,de垂直ab,垂足为e,若角bcd和角bca的面积之比为3：8,求三角形ade与三角形bde的面积之比.2、如图,三角形abc中,ad是角bac的平分线,e、f分别是ab 郭书瑶在2010年11月20日上快乐大本营第二次跳的舞,歌名叫you love is my drug,可那舞蹈怎么跳我要学啊! 复数z满足z的绝对值等于1,（3＋4i）z,是纯虚数,求z 数学题急求解,复数已知z=（2m的平方+3m-2）+（m的平方+m-2）i （m属于R）,求当z=0时,m的值. 设某个多边形的顶点在复平面中均为形式为1+z+z2+……+zk-1的点其中|z| 一道关于复数的数学题求解!若复数Z1满足Z1=i(2-Z1) (i为虚数单位)若|Z|=1,求|Z-Z1|的最大值 5,thanks a lot.___A,it's a pleasureB,it doesn't matterC,see you tomorrow12,the weather is quite____A,cloudB,cloudyC,rain13,how cold it is today!i like spring_____than winterA,goodB,betterC,best14,______a strong wind it is!A,howB,whatC,when15,the farm 甲乙两根绳子共长44米,如果甲根减去三分之一,乙根接上一米,则两根绳子一样长,求甲乙原来各长多少米? 甲乙两根绳子共长11米,甲绳截去它的5/1,乙绳增加70cm,则两绳之长相等,那么甲绳长 I have a new friend.（）name is bob. 已知函数y=Asin(wx+φ)(A>0,φ>0,ⅠφⅠ 五年级数学,熟练掌握三角形面积的计算方法 我们在学习,推导平行四边形,三角形面积的计算公式都运用了转化的方法对还是错? 初中英语选择填空It was in this cinema (that/which) I saw the film.这题答案选that.which可以吗?为什么?If you don't go to the meeting tomorrow,he (won't/does't),either.这题答案选won't.不是应该跟前文照应,选does't吗? 一初中英语选择填空The TV set is too expensive,____it gives us a better picture.A.becauseB.though