输赢不重要1000作文

已知实数x,y 满足x2+y2+2x-2√3y=0求：（1） x2+y2的最大值（2） x + y 的最大值 数列｛An（小个的n,只是打不出来）｝的前n项和记为Sn,已知An=1/n（n+1）1.求S1,S2,S3的值,猜想Sn的表达式2.请用数学归纳法证明你的猜想 1：满足条件：3x+4y=12 (0 最近快要上高一了,现在在预习高一的化学,有些不懂的地方,希望各位教教!求物质的量的万能恒等式,以及理想气体状态方程很难理解.希望各位可以教教,如果有关于这个资料的,希望可以贡献 本人只发高清图, 【第7题】点开看大图再加一个，楼底的第4题x^2的系数是不是100啊 一道高二数学求y=lnx+a/x a属于R, 求该函数最值 已知点P(2,3)为直线a1x+b1y-5=0和直线a2x+b2y-5=0的公共点,则由两点M(a1,b1)和N(a2,b2)所确定的直线方程是 平面内有7个点,其中有5个点在一条直线上,此外无3点共线,经过这7个点可连成不同直线的条数是多少? jack spends half an hour playing table tennis every day同义句转换(it)(take)jack half an hour (to)(play)table tennis every day为什么这么填 这句话属于独立主格结构吗?Four days after setting out,while the Titanic was sailing across the icy water of the North Atlantic,huge iceberg was suddenly spotted by a lookout.要是属于独立主格结构.为什么主句和分句中都有w 英语:为什么这句话是独立主格结构?As she emerged from her drifting cloud of gun smoke [with the water churned to foam beneath her bow],her flags flying,pennants waving,sails filling in the breeze,and the red and gold of her superstructur 袁字加偏旁能组成什么字就是把袁字加偏旁部首 Bob,Eric,friends,are,her,and 连词成句 四字头袁字底羽字旁是什么字? bob,friends,are,her,eric,and,连词成句 谁知道羽旁边加个也字组成什么字 These are john and______friend,eric 求班级宠物一家亲的读后感 求《班级宠物一家亲》读后感500字. 班级宠物一家亲,牛牛随地大小便这篇课文的读后感怎么写 请问一个字,谁知道怎么读的?“立”字旁加一个“羽”字怎么念的如题,谁知道怎么读啊? ‘立’字旁加个‘争’应该读什么 I want to be near you forever咩意思 小石潭记的赏析 I like Xiao ran .Her,I like her,but only so,because I do not want to destroy her happi 英语 一道单选 (30 17:36:36)the wounded soldier is reported_______last night.A.to be operated on       B.to have been operated on    C.   being operated on       高二 英语 一道单选 请详细解答,谢谢! (1 17:32:33)only in this way_______to make improvements in the education system.A . we can hope    B. we did hope    C. can we hope   D. did we hope —Now that you like the portable personal computer so much?why not buy one?—Well?I can’t afford _____ computer at present.A.that expensive a B.a such cheap C.that an expensive D.so a cheap【注意】答案选A Man Always Remember Lovely Because Of Romantic Only see sb. do sth.有这样的语法吗? four+four+one=nine,找每个字母代表的数目字由0到6,不可以重复