求不定积分，求大神帮忙，数学不好

亲，您好，很高兴为您服务，解答如下是的乐图墙布是乐图美居旗下的产品。2006年，英国乐图实业有限公司来到中国，为了更好的服务亚太地区客户在香港设立营业部。2010年，乐图美居LETUHOME品牌诞生。由东莞市菱王贸易有限公司代理。乐图美居是一个集代理、研发、生产、销售、服务于一体的墙纸品牌。2014年，作为墙纸行业新锐品牌，乐图美居入驻京东，因其一直坚持清新，环保，自然的风格，经过不断的努力与成长，跻身成为电商行业壁纸类目的知名品牌，持续蝉联同类目TOP排行榜，同时也在业界内树立起了一个诚信负责的网商品牌形象。是一线品牌。

如何选择墙布上面有着很大的帮助。1. 健康安全首先位于首位的必须是安全问题，在选择墙布时切勿贪图小便宜。一些便宜的墙布都是用劣质的材料制作而成，这类墙布对于人体的危害特别大。拿到墙布时可以先闻一闻，如果有刺鼻不舒服的味道，不要犹豫，果断放弃。2. 装修效果选择墙布时可以考虑房间的装修风格，比如说欧式装修可以选择偏简约一点的墙布。同时可以考虑搭配家具、灯光的效果。选择的墙布尽量要与你的装修风格一致，让整个房间看上去更加的自然和谐。3. 材质手感一款好的墙布，它的材质和手感也十分的重要。墙布的材质会对整个房子的光线和空间都有着挺大的影响，考虑好你想要的效果，按照那种效果去选择你的墙布。4. 个人喜好除了以上的方法以外你也可以根据个人喜好去选择墙布。可以从墙布的材质、手感、花纹图案、颜色等方面进行考虑。选择一款让你摸上去舒服，看上去满意的墙布能让你一整天的心情都变得十分的愉悦。

由于俄罗斯卢布汇率暴跌，而物价也因为俄罗斯相关法律规定并没有暴涨，加上俄罗斯化妆品的定价本来就比国内低很多，所以在俄罗斯购买就会划算很多;俄罗斯商场购买化妆品具有鲜明的等级，只要买够一定数量的化妆品就可以获得一张最低打75折的会员卡，大家想一下，一款500元的香水经过75折的折扣之后足足便宜了125元;然后呢，俄罗斯每逢过节等重要日子化妆品店都会疯狂打折，最低能打5折，而且可以跟会员卡叠加一起使用。并且因为商场之间的竞争，化妆品店经常会有不定时的买商品赠代金劵的活动来吸引客人。比如最近，俄罗斯LETU就直接举办了买一赠一的活动，折扣力度大到想不到，最重要的是，连网站上都是直接显示中文告知折扣活动了，可见华人在俄罗斯购买化妆、护肤类产品的力度之大呀。大家为什么选择海淘还有一个重要原因当然是因为产品可以保真，毕竟都是自己在购物网站上亲自下单的。但是很多客户会想啊，俄罗斯海淘是便宜，可是俄罗斯购物网站并不支持直邮啊。是的，所以才会有Rugogo的出现嘛，大家在俄罗斯海淘下单之后，把商品交给我们转运回国就可以了。除了价格优势、商品保真，我们还会保护好它们的安全。

唯独爱你。尾肚矮驴 尾肚矮驴根据9letu小编查的资料属于福建的方言,是“唯独爱你”的意思。福建省历来以方言复杂著称。全国汉语方言有七大类,福建境内就占有其五:闽语、客家语、赣语、吴语和官话。

像不定式，动名词和分词这三类非谓语都可以放在句首呀。如：To go to school early the next day, he went to bed. Rising up early every morning is a good habit. Protected by the parents very well, the little girl seemed a bit shy.作定语的非谓语？不定式，动名词和分词也都可以作定语。如：I have something to do。 (不定式作定语) living fish (动名词作定语) an educated man (分词作定语)

(source: letu) 美国拉斯韦加斯一处公寓，因烟火引发火警，大火延烧致50名居民家园全毁。 现场的监控摄像头显示，在熊熊烈火中，一只猫咪突然跳出3楼高的阳台！ 眼看熊熊的大火马上就要像猫咪这边蔓延，而这只灰白颜色的猫咪看看周围，却被吓得不知所措，呆呆立在原地。生死一念间，焦急万分的主人说了一句话，竟然让猫咪上演了“九死一生”的奇迹！ (source: letu) 这只灰白相间的猫咪，被困在拉斯维加斯一公寓3楼的阳台上，后面便是熊熊火焰。它感觉向上爬到炽热的楼顶不可能，然后前爪搭在木制栏杆上，似乎被大火吓得不轻，呆在原地没有行动。 经大火冲击，两扇窗户的玻璃被毁，继续呆在原地的猫咪非常危险。接着，有人在楼下嘶哑地呼喊：“跳！宝贝，跳！”(Jump, baby, jump!) (source: letu) 听到主人声音的猫咪，看了一眼楼下，然后紧抓横梁，望着房顶正在思考是否要跳上去。 主人继续在楼下大喊，鼓励爱猫：“快！！跳！宝贝，跳！”(Jump, baby, jump!) 这一声给了猫咪极大的鼓舞，猫咪突然向下攀爬，但周围温度已经很高，猫咪最终选择从2层楼高的阳台跳下。 (source: letu) 它立刻猛力一跃，从阳台上跳到地面。猫咪在坠落中四肢张开尾巴上翘，主人非常担忧，幸运的是爱猫最后安全着陆，一点也没有受伤地离开那里。 据调查发生这场大火，可能由烟火或炮竹引起，连栋的公寓烧成废墟，幸运的是没有人丧生，但有4人受伤(3名成年居民和一名消防队员)、一只狗死亡。 还好这只猫勇敢跳下来了！分享出去吧！ letu

你玩一些单机游戏 如红色警戒 CS 流星蝴蝶剑！

社戏中平桥村对我来说是个什么样的地方

天津酷盟网络科技有限公司联系方式：公司电话022-66258180，公司邮箱caiwusanshi@letupower.com，该公司在爱企查共有10条联系方式，其中有电话号码4条。公司介绍：天津酷盟网络科技有限公司是2017-03-29在天津市滨海新区成立的责任有限公司，注册地址位于天津生态城动漫中路126号动漫大厦C区二层209（TG第524号）。天津酷盟网络科技有限公司法定代表人马超，注册资本210万(元)，目前处于开业状态。通过爱企查查看天津酷盟网络科技有限公司更多经营信息和资讯。

仙剑奇侠传系列轩辕剑系列幻想三国志系列都是很好玩的角色扮演游戏另外大唐双龙传 寻秦记也都是黄易的小说改编的游戏

溜就死？

大同小异

inner universe菅野洋子作曲，俄文歌，中间有加英文歌词：ti:inner universe(完整版)][ar:yoko kanno/origa/shanti snyder][al:攻壳机动队OST1][by:] [00:00.00]作词：Origa/Shanti Snyder[00:03.20]作曲：菅野洋子[00:06.40]编曲：菅野洋子[00:09.80]演唱：Origa[00:14.80]感谢灵风提供歌曲(www.fosky.com)(上中,中英,下原文)[00:18.60]LRC歌词制作：maraman[00:20.90][00:23.40]Angely i demony kruzhili nado mnoj[00:29.20]Razbivali ternii i zvyozdnye puti[00:34.70]Ne znaet schast"ya tol"ko tot,[00:40.40]Kto ego zova ponyat" ne smog...[00:46.60]nalyubuites"..,nalyubuites"..[00:52.30]aeria gloris, aeria gloris[00:58.00]nalyubuites"..,nalyubuites"..[01:03.70]aeria gloris, aeria gloris[01:08.70]I am Calling Calling now, Spirits rise and falling[01:21.70]Soboj ostat"sya dol"she...[01:26.80]Calling Calling, in the depth of longing[01:39.00]Soboj ostat"sya dol"she...[01:44.00]nalyubuites"...,nalyubuites"...[01:50.00]aeria gloris, aeria gloris[01:57.30][02:07.10]Stand alone... Where was life when it had a meaning...[02:18.20]Stand alone... Nothing"s real anymore and...[02:24.50]...Beskonechnyj beg...[02:31.30]Poka zhiva ya mogu starat"sya na letu ne upast",[02:44.10]Ne razuchit"sya mechtat"...lyubit"...[02:56.10]...Beskonechnyj beg...[02:58.70]Calling Calling now, For the place of knowing[03:11.10]There"s more that what can be linked[03:16.10]Calling Calling now, Never will I look away[03:28.30]For what life has left for me[03:33.40]Yearning Yearning, for what"s left of loving[03:45.60]Soboj ostat"sya dol"she...[03:50.40]Calling Calling now, Spirits rise and falling[04:02.70]Soboj ostat"sya dol"she...[04:07.90]Calling Calling, in the depth of longing[04:20.00]Soboj ostat"sya dol"she...[04:25.30]nalyubuites",nalyubuites"[04:30.80]aeria gloris, aeria gloris[04:36.70]nalyubuites",nalyubuites"[04:42.20]aeria gloris, aeria gloris tv 2的op是rise ,也是菅野洋子作曲两首都很好听满意请采纳。

天使与恶魔在我上方环绕 飒飒穿过困苦与银河 唯一不知道快乐的人 是唯一不懂他召唤的人 我正在召唤，召唤着，精神起起伏伏 让我再呆一会儿… 召唤召唤，在渴望的深处 让我再呆一会儿… 孤单一人…生命的意义何在… 孤单一人…一切都不再真实… …无止境地奔跑… 当我活着的时候，我能努力的飞翔而不跌落 不会忘记如何幻想…如何去爱 …无止境地奔跑… 召唤召唤，为了在熟悉的地方 有更多的东西彼此相联 召唤召唤，决不无视 生活所留给我的 向往，渴望，爱 让我再呆一会儿… 召唤召唤，精神起起伏伏 让我再呆一会儿… 召唤召唤，在渴望的深处 让我再呆一会儿…

第一部的叫universe，第二部的叫rise

歌曲：CanYouSeeMeNow歌手：t.A.T.u.所属专辑：DangerousAndMovingt.A.T.u-CanYouSeeMeNowcanyouseemenowcanyouseemenow(canyousee)allthisweepingintheairwhocantellitwillfallthroughfloatingforestsintheairacrosstherollingopenseablowakissandrunthroughtheairleavethepastfindnowherefloatingforestsintheairclownsallaroundyouclownsthatonlyletyouknowwhereyouletyoursensesgoclownsallaroundyouit"sacrossIneedtobearallthisblackandcruelisfairthisisanemergencydon"tyouhideyoureyesfrommeopenthemandseemenowcanyouseemenow(canyousee)canyouseemenowcanyouseecanyouseecanyouseecanyouseemenowcanyouseemenow(clownsarearoundyou)canyouseecanyouseecanyouseecanyouseemenowfloatingfloatingfloatingfloatingseemehereintheairnotholdingontoanywherebutholdingonsobewareIhavesecretsIwon"tshareseemeherewishingyouifIdon"tdenyIdocontemplateourwishawayifIaskyounottostayclownsareheretoletyouknowwhereyouletyoursensesgoclownsareallaroundyouit"sacrossIneedtobearallthisblackandcruelisfairthisisanemergencedon"tyouhideyoureyesfrommeopenthemandseemenowcanyouseemenowcanyouseemenowcanyouseecanyouseecanyouseecanyouseemenow(clownsarearoundyou)canyouseemenowcanyouseemenow(canyousee)canyouseemenow歌曲：Clowns(CanYouSeeMeNow?)歌手：Tatu所属专辑：200KmhInTheWrongLaneTatu-Clowns(CanYouSeeMeNow?)Canuseemenow?Canuseemenow?Canusee?Allthisweepingintheair,IcantellwereabouttofallThroughfloatingforestsintheairAcrosstherollingopensea.NowIkissandrunthroughair.Leavethepastfindnowhere,FloatingforestsintheairClownsallaroundyou.ClownsareheretoletuknowWhereuletyoursensesgo.ClownsallaroundyouIt"sacrossIneedtobear.Allthisblackandcruelisfair,ThisisanemergencyDon"tyouhideyoureyesfromme,Openthemandseemenow.Canuseemenow?Canusee?Canuseemenow?Canusee?Canusee?Canusee?Canusee?Canuseemenow?Canusee?Canusee?Canuseemenow?Canuseemenow?Canuseeclownsallaroundyou.Canusee?Canusee?Canusee?Canuseemenow?(Floating,floating,floating,floating)SeemehereintheairNotholdingontoanywhereButholdingonsobewareIhavesecretsIwon"tshare.SeemeherewishingyouIfIdon"tdenyIdoContemplateourwishaway.IfIaskunottostay,ClownsareheretoletuknowWhereuletyoursensesgo,ClownsallaroundyouIt"sacrossIneedtobare.Allthisblackandcruelisfair,ThisisanemergencyDon"tyouhideyoureyesfrommeOpenthemandseemenow.Canuseemenow?Canuseemenow?Canusee?Canusee?Canusee?Canusee?Canuseemenow?Clownsallaroundyou.Canuseemenow?Canusee?Canuseemenow?Canusee?Canusee?Canuseemenow?歌曲：Clowns(CanYouSeeMeNow?)歌手：Tatu所属专辑：200KmhInTheWrongLaneTatu-Clowns(CanYouSeeMeNow?)Canuseemenow?Canuseemenow?Canusee?Allthisweepingintheair,IcantellwereabouttofallThroughfloatingforestsintheairAcrosstherollingopensea.NowIkissandrunthroughair.Leavethepastfindnowhere,FloatingforestsintheairClownsallaroundyou.ClownsareheretoletuknowWhereuletyoursensesgo.ClownsallaroundyouItsacrossIneedtobear.Allthisblackandcruelisfair,ThisisanemergencyDontyouhideyoureyesfromme,Openthemandseemenow.Canuseemenow?Canusee?Canuseemenow?Canusee?Canusee?Canusee?Canusee?Canuseemenow?Canusee?Canusee?Canuseemenow?Canuseemenow?Canuseeclownsallaroundyou.Canusee?Canusee?Canusee?Canuseemenow?(Floating,floating,floating,floating)SeemehereintheairNotholdingontoanywhereButholdingonsobewareIhavesecretsIwontshare.SeemeherewishingyouIfIdontdenyIdoContemplateourwishaway.IfIaskunottostay,ClownsareheretoletuknowWhereuletyoursensesgo,ClownsallaroundyouItsacrossIneedtobare.Allthisblackandcruelisfair,ThisisanemergencyDontyouhideyoureyesfrommeOpenthemandseemenow.Canuseemenow?Canuseemenow?Canusee?Canusee?Canusee?Canusee?Canuseemenow?Clownsallaroundyou.Canuseemenow?Canusee?Canuseemenow?Canusee?Canusee?Canuseemenow?

是不是贾斯汀比伯的 baby？这歌最近比较火，希望能帮到你

Ruta Gedmintas简介姓名：Ruta Gedmintas国籍：英国性别：女星座：狮子座 生日：1983年8月23日身高：180cm职业：演员主要作品：间谍代码9，都铎王朝（扮演Elizabeth Blount）BBC 唇唇欲动扮演Frankie个人介绍Ruta出生在英格兰，父母是立陶宛人。并在伦敦戏剧中心根据鲁文Adiv培训。她在间谍：代码9雷切尔哈里斯中扮演一名前警官。她也客串过BBC的Waking the Dead 和ITV1的The Bill的角色。她最出色的角色是在《都铎王朝》第一季中出演的Elizabeth Blount 。在2010年她曾参演独立电影 - Zerosome和Atletu（又名运动员）。然后出演了BBC的Lip Service(译名唇唇欲动)中的Frankie。电影作品唤醒沉睡的死Waking the Dead（2005年）——扮演Shelly MartinGoldplated （2006年）——扮演MirandaThe Innocence Project (6集, "#1.1", "#1.2", "#1.3", "#1.4", "#1.5" and "#1.7", 2006年-2007年)——扮演Mary Jarvis都铎王朝（3 集, "In Cold Blood", "Simply Henry" 和"Arise, My Lord", 2007年） ——扮演Elizabeth BlountThe Bill (1集, "Stealth Attack", 2007年) 扮演Gemma Heyes失落的萨玛丽亚 (2008年) ——扮演Elle HaasMiss Conception (2008年)——扮演 Alexandra间谍代码9 (6集, "#1.1", ""1.2", "#1.3", "#1.4", "#1.5" and "#1.6", 2008年)——扮演 Rachel / KylieAtletu (2009年)——扮演Charlotte私事(2集, "Vital Statistix" 和 "Connectivity", 2009年)——扮演Evie Hartmann-Turner警车(2010年)——扮演Suzy唇唇欲动(5集, "#1.1", "#1.2" ,"#1.3" , "#1.4", "#1.5", 2010年)——扮演Frankie AlanZerosome (2010)——Lara（后期制作）Exteriors (2011)——Pearl （后期制作）公园里 (2011)——Lake （后期制作）The Borgias (1集, "The Assassin", 2011年) .... Ursula Bonadeo

如图所示

曲是营野洋子编的,歌是俄罗斯歌手Origa唱的是俄语http://mp3.baidu.com/m?f=ms&tn=baidump3&ct=134217728&rn=&word=inner+universe&lm=-1Inner Universe作词：Origa/Shanti Snyder 作曲：菅野洋子 演唱：Origa —————————————————————————————————— Ангелы и демоны кружияи надо мной Раэбивали тернии и эвёэлные пути Не энает счастьа только тот, Кто его эова понять не смог... I am Calling Caling now, spirits rise and falling Собой остаться дольше... Calling Caling, in the depth of longing Собой остаться дольше... Stand alone... Where was life when it had a meaning... Stand alone... Nothing"s real anymore and... ...Бесконечный бег... Пока жива я могу старатьсяна лету не упасть, Не раэучиться мечтать... любить... ...Бесконечный бег... Calling Calling, For the place of konwing There"s more than what can be linked Calling Calling, Never will I look away For what life has left for me For what life has left for me Yearning Yearning, for what"s left of loving Собой остаться дольше... Calling Calling now, Spirits rise and falling Собой остаться дольше... Calling Calling, in the depth of longing Собой остаться дольше... —————————————————————————————————— Angely i demony kruzhili nado mnoj Rassekali ternii i mlechnye puti Ne znaet schast"ya tol"ko tot, Kto ego zova ponyat" ne smog... I am Calling Calling now, Spirits rise and falling Soboj ostat"sya dol"she... Calling Calling, in the depth of longing Soboj ostat"sya dol"she... Stand alone... Where was life when it had a meaning... Stand alone... Nothing"s real anymore and... ...Beskonechnyj beg... Poka zhiva ya mogu starat"sya na letu ne upast", Ne razuchit"sya mechtat"...lyubit"... ...Beskonechnyj beg... Calling Calling, For the place of knowing There"s more that what can be linked Calling Calling, Never will I look away For what life has left for me Yearning Yearning, for what"s left of loving Soboj ostat"sya dol"she... Calling Calling now, Spirits rise and falling Soboj ostat"sya dol"she... Calling Calling, in the depth of longing Soboj ostat"sya dol"she... —————————————————————————————————— 天使与恶魔在我上方环绕 飒飒穿过困苦与银河 唯一不知道快乐的人 是唯一不懂他召唤的人 我正在召唤，召唤着，精神起起伏伏 让我再呆一会儿… 召唤召唤，在渴望的深处 让我再呆一会儿… 孤单一人…生命的意义何在… 孤单一人…一切都不再真实… …无止境地奔跑… 当我活着的时候，我能努力的飞翔而不跌落 不会忘记如何幻想…如何去爱 …无止境地奔跑… 召唤召唤，为了在熟悉的地方 有更多的东西彼此相联 召唤召唤，决不无视 生活所留给我的 向往，渴望，爱 让我再呆一会儿… 召唤召唤，精神起起伏伏 让我再呆一会儿… 召唤召唤，在渴望的深处 让我再呆一会儿…

ConstanceRousseauConstanceRousseau是一名演员，主要作品有《明年》。外文名：ConstanceRousseau职业：演员代表作品：明年合作人物：VaniaLeturcq

作词：Origa/Shanti Snyder作曲：菅野洋子编曲：菅野洋子演唱：OrigaAngely i demony kruzhili nado mnojRazbivali ternii i zvyozdnye putiNe znaet schast"ya tol"ko tot,Kto ego zova ponyat" ne smog...nalyubuites"..,nalyubuites"..aeria gloris, aeria glorisnalyubuites"..,nalyubuites"..aeria gloris, aeria glorisI am Calling Calling now, Spirits rise and fallingSoboj ostat"sya dol"she...Calling Calling, in the depth of longingSoboj ostat"sya dol"she...nalyubuites"...,nalyubuites"...aeria gloris, aeria glorisStand alone... Where was life when it had a meaning...Stand alone... Nothing"s real anymore and......Beskonechnyj beg...Poka zhiva ya mogu starat"sya na letu ne upast",Ne razuchit"sya mechtat"...lyubit"......Beskonechnyj beg...Calling Calling now, For the place of knowingThere"s more that what can be linkedCalling Calling now, Never will I look awayFor what life has left for meYearning Yearning, for what"s left of lovingSoboj ostat"sya dol"she...Calling Calling now, Spirits rise and fallingSoboj ostat"sya dol"she...Calling Calling, in the depth of longingSoboj ostat"sya dol"she...nalyubuites",nalyubuites"aeria gloris, aeria glorisnalyubuites",nalyubuites"aeria gloris, aeria glorishttp://music.baidu.com/song/55913782

-x^2 +2x =-(x-1)^2 + 1letu=x-1du =dxx=1, u=0x=+u221e, u=+u221eu222b(1->+u221e) x^2. e^(-x^2+2x) dx=u222b(0->+u221e) (u+1)^2. e^(-u^2+1) du=e. u222b(0->+u221e) (u+1)^2. e^(-u^2) du=e. u222b(0->+u221e) (u^2+2u +1) .e^(-u^2) du=e.[ u222b(0->+u221e) u^2.e^(-u^2) du +u222b(0->+u221e) (2u+1).e^(-u^2) du ]=e.[ u222b(0->+u221e) u^2.e^(-u^2) du -[e^(-u^2)]|(0->+u221e) +u221au03c0/2]=e.[ u222b(0->+u221e) u^2.e^(-u^2) du +1 +u221au03c0/2]=e.[ 1 +u221au03c0/2 -(1/2)u222b(0->+u221e) u de^(-u^2) ]=e.[ 1 +u221au03c0/2 -(1/2)[u.e^(-u^2)]|(0->+u221e) + (1/2)u222b(0->+u221e) e^(-u^2) du ]=e.[ 1 +u221au03c0/2 -0 + (1/2)(u221au03c0/2) ]=e.[ 1 + (3/4)u221au03c0]

「ENAMEL」 歌手：SID（シド）dagalahayaku yisikulaotoletekola kailakuhitoyamietawolasekeita nakahekumegasasotatojiubelikutatonaguguikayahimokalijilesaito kileiggayoowa tayiwadamotemuwasulesasatehagalutolosoasakokisulailalahifukujiuwa yes my lordmadaledakutatewamiwonakaletunakatomamafutaibisatukakiidotomakamatokiye

F(x)=∫(0->x)tf(2x-t)dtletu=2x-tdu=-dtt=0,u=2xt=x,u=xF(x)=∫(0->x)tf(2x-t)dt=∫(2x->x)(2x-u)f(u)(-du)=∫(x->2x)(2x-u)f(u)du=2x∫(x->2x)f(u)du-∫(x->2x)uf(u)duF"(x)=2[xd/dx∫(x->2x)f(u)du+∫(x->2x)f(u)du.d/dx(x)]-d/dx∫(x->2x)uf(u)du=2{x[2f(2x)-f(x)]+∫(x->2x)f(u)du}-[4xf(2x)-xf(x)]considerG(x)=∫(p(x)->q(x))g(t)dtG"(x)=q"(x)g(q(x))-p"(x).g(p(x))

The Cup Of Life 歌手：ricky martin Do you really want it, yeahDo you really want it, yeahDo you really want it, yeahGo, go go!Go, go go!Ale, ale, ale!Ale, ale, ale!Go, go ,go, go, go!The cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleLa vida es CompeticionHay que sonar Ser campeonLa copa es La bendicionLa ganaras Go, Go, Go!And when you feel the heatThe world is at your feet No one can hold you downIf you really want it Just steal your destinyRight from the hands of fate Reach for the cup of lifeCause your name is on it Do you really want it, yeahDo you really want it, yeahTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleDo you really want itDo you really want itDo you really want itDo you really want ityeahThe cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahDo you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleDo you really want it, yeah

letu=x^(1/6)du =(1/6)x^(-5/6) dxdx =6u^5 du∫dx/[x^(5/6) + √x]=∫6u^5 du/( u^5 + u^3 )=6∫u^2 /( u^2 + 1 ) du=6∫[ 1- 1 /( u^2 + 1 )] du=6( u -arctanu ) + C=6[ x^(1/6) - arctan(x^(1/6)) ] + C

那两个积分上下限是啥，看不清

上句：超喜欢，未付款，忘白送，莫负我；下句：特高兴，留歆言，思喜迎，屏欢他。

(2)u222b(0->x)t(f(2x-t)dt=e^x-1f(1)=1Tofind:u222b(1->2)f(x)dxsolution:letu=2x-t=-dtt=0uff0cu=2xt=xuff0cu=xu222b(0->x)t(f(2x-t)dt=u222b(2x->x)(2x-u)f(u)(-)=u222b(x->2x)(2x-u)f(u)=u222b(x->2x)(2x-t)f(t)dtu222b(0->x)t(f(2x-t)dt=e^x-1u222b(x->2x)(2x-t)f(t)dt=e^x-12xu222b(x->2x)f(t)dt-u222b(x->2x)tf(t)dt=e^x-1d/dx{2xu222b(x->2x)f(t)dt-u222b(x->2x)tf(t)dt}=d/dx{e^x-1}2u222b(x->2x)f(t)dt+2x[2f(2x)-f(x)]-[4xf(2x)-xf(x)]=e^xx=12u222b(1->2)f(t)dt+2[2f(2)-f(1)]-[4f(2)-f(1)]=e2u222b(1->2)f(t)dt-3f(1)=e2u222b(1->2)f(x)dx-3=eu222b(1->2)f(x)dx=(1/2)(e+3)

letu=x^(1/3)du =(1/3)x^(-2/3) dxdx = 3u^2 dux=1, u=1x=8 , u=2u222b(1->8) dx/[x+x^(1/3)]=u222b(1->2) 3u^2 du/(u^3+u)=3u222b(1->2) u/(u^2+1) du=(3/2)[ ln|u^2+1| ]|(1->2)=(3/2)( ln5 - ln2 )

能不能让我陪着你走canikeepucompany既然你说留不住你asusaiduwon"tstay回去的路有些黑暗thewaybackislittlebitdark担心让你一个人走worriethatugoalone我想是因为我不够温柔ithinkthat"sbecausei"mnotgentleandsoftenough不能分担你的忧愁can"tshareurworry如果这样说不出口ifican"tsaylikethat就把遗憾放在心中thenputtheregretintomyheart把我的悲伤留给自己keepthesadnessformyself你的美丽让你带走letutakeawayurbeauty从此以后我再没有sincetheni"llneverhave快乐起来的理由anyreasontofeelhappy把我的悲伤留给自己keepthesadnessformyself你的美丽让你带走letutakeawayurbeauty我想我可以忍住悲伤ibelievethaticanstandthesadness可不可以你也会想起我andcanuremembermesometimes是不是可以牵你的手啊ificanholdurhand从来没有这样要求ihaveneveraskedforit怕你难过转身就走beafriaidthatu"llturnbacktoleavewithworry那就这样吧我会了解的that"sallicanunderstand把我的悲伤留给自己keepthesadnessformyself你的美丽让你带走letutakeawayurbeauty从此以后我再没有sincetheni"llneverhave快乐起来的理由anyreasontofeelhappy我想我可以忍住悲伤ibelievethaticanstandthesadness假装生命中没有你pretentthatuaren"tinmylife从此以后我在这里sincetheni"llbehere日夜等待你的消息waitingforurmessagedayandnight能不能让我陪着你走canikeepucompany既然你说留不住你asusaiduwon"tstay无论你在天涯海角nomatterwhereuare时不时你偶尔会想起我canuremembermeaccasionally可不可以你也会想起我canurememberme?可不可以canu?可不可以canu?可不可以canu...

能不能让我陪着你走canikeepucompany既然你说留不住你asusaiduwon"tstay回去的路有些黑暗thewaybackislittlebitdark担心让你一个人走worriethatugoalone我想是因为我不够温柔ithinkthat"sbecausei"mnotgentleandsoftenough不能分担你的忧愁can"tshareurworry如果这样说不出口ifican"tsaylikethat就把遗憾放在心中thenputtheregretintomyheart把我的悲伤留给自己keepthesadnessformyself你的美丽让你带走letutakeawayurbeauty从此以后我再没有sincetheni"llneverhave快乐起来的理由anyreasontofeelhappy把我的悲伤留给自己keepthesadnessformyself你的美丽让你带走letutakeawayurbeauty我想我可以忍住悲伤ibelievethaticanstandthesadness可不可以你也会想起我andcanuremembermesometimes是不是可以牵你的手啊ificanholdurhand从来没有这样要求ihaveneveraskedforit怕你难过转身就走beafriaidthatu"llturnbacktoleavewithworry那就这样吧我会了解的that"sallicanunderstand把我的悲伤留给自己keepthesadnessformyself你的美丽让你带走letutakeawayurbeauty从此以后我再没有sincetheni"llneverhave快乐起来的理由anyreasontofeelhappy我想我可以忍住悲伤ibelievethaticanstandthesadness假装生命中没有你pretentthatuaren"tinmylife从此以后我在这里sincetheni"llbehere日夜等待你的消息waitingforurmessagedayandnight能不能让我陪着你走canikeepucompany既然你说留不住你asusaiduwon"tstay无论你在天涯海角nomatterwhereuare时不时你偶尔会想起我canuremembermeaccasionally可不可以你也会想起我canurememberme?可不可以canu?可不可以canu?可不可以canu...

因为t从0到x时，u是从x到0，所以你应该把上下限换一下

微积分。。。这特么都是什么大佬啊？

The Cup Of Life 歌手：ricky martin Do you really want it, yeahDo you really want it, yeahDo you really want it, yeahGo, go go!Go, go go!Ale, ale, ale!Ale, ale, ale!Go, go ,go, go, go!The cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleLa vida es CompeticionHay que sonar Ser campeonLa copa es La bendicionLa ganaras Go, Go, Go!And when you feel the heatThe world is at your feet No one can hold you downIf you really want it Just steal your destinyRight from the hands of fate Reach for the cup of lifeCause your name is on it Do you really want it, yeahDo you really want it, yeahTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleDo you really want itDo you really want itDo you really want itDo you really want ityeahThe cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahDo you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleDo you really want it, yeah

歌曲: The Cup of Life 歌手: Ricky Martin 专辑: 《The Greatest ..》Do you really want it, yeahDo you really want it, yeahDo you really want it, yeahGo, go go!Go, go go!Ale, ale, ale!Ale, ale, ale!Go, go ,go, go, go!The cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleLa vida es CompeticionHay que sonar Ser campeonLa copa es La bendicionLa ganaras Go, Go, Go!And when you feel the heatThe world is at your feet No one can hold you downIf you really want it Just steal your destinyRight from the hands of fate Reach for the cup of lifeCause your name is on it Do you really want it, yeahDo you really want it, yeahTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleDo you really want itDo you really want itDo you really want itDo you really want ityeahThe cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahDo you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleDo you really want it, yeah

letu=π/2 -xdu =-dxx=0, u=π/2x=π/2, u=0I=∫(0->π/2) dx/[ 1+ (tanx)^2018]=∫(π/2->0) -du/[ 1+ (cotu)^2018]=∫(0->π/2) dx/[ 1+ (cotx)^2018]2I =∫(0->π/2) dx/[ 1+ (tanx)^2018] + ∫(0->π/2) dx/[ 1+ (cotx)^2018]=∫(0->π/2) [ 2+(tanx)^2018 + (cotx)^2018 ]/{[1+ (tanx)^2018].[ 1+ (cotx)^2018]} dx=∫(0->π/2) [ 2+(tanx)^2018 + (cotx)^2018 ]/[2+ (tanx)^2018]+ (cotx)^2018]} dx=∫(0->π/2) dx=π/2I=π/4=>∫(0->π/2) dx/[ 1+ (tanx)^2018] =π/4

棉花糖演唱：至上励合词曲：马雪阳（马雪阳）回忆着初次相遇坐在你身旁是谁曾经说太幸福会缺氧爱情已种在心里自由的生长童话里的浪漫需要用心去培养（刘洲成）想带你一起流浪沐浴阳光去完成温暖的想象喜欢你任性时候可爱模样好像失意时投下的阳光（金恩圣）你就是我心中的棉花糖甜蜜的梦想彼此牵起的双手谁都不要放去眺望在远方悉数快乐和希望展开翅膀我们自由飞翔（张远）你就是我心中的棉花糖甜蜜的梦想有你世界都变了就算天快亮能不能就这样自由的去游荡爱在我们心间悄悄绽放许下愿望（李茂）在寒冷时候我们难免会彷徨爱总会守在某个地方建造起围墙心需要更坚强不退让不绝望有时候等待慢慢代替了感伤需要去付出多一些互相体谅想一起去等待着那道曙光将风雨之中那盏烛火慢慢点亮未来的时光有我的肩膀（张远）想带你一起流浪沐浴阳光去完成温暖的想象喜欢你任性时候可爱模样好像失意时投下的阳光（马雪阳）你就是我心中的棉花糖甜蜜的梦想彼此牵起的双手谁都不要放去眺望在远方悉数快乐和希望展开翅膀我们自由飞翔（合唱）你就是我心中的棉花糖甜蜜的梦想有你世界都变了就算天快亮能不能就这样自由的去游荡爱在我们心间悄悄绽放就是天堂（李茂）Hey,youknow,whoweareListenthissongandsaymynameScreamandshoutWearetheTOPCOMBINE-------------------------------至上励合《降临》（刘洲成）干涸的泥土已埋藏千年不变的构图（李茂）Yeah过滤时光只剩LonelinessButdon"tafraid（刘洲成）迦南美地消失前开始肆意扼杀生长的幸福（李茂）Yo是来自异域的艺术警示着历史麻木Newlife（马雪阳）停不住说不出什么程度去努力描述风尘已久苍老的石板路不在乎有若无什么地步蒸发身体的温度凝结成雕塑（合唱）当爱重新降临在大地吹散了悲伤的记忆（张远）完成了光荣的意义（合唱）站在重新收获的雨季露出了笑容的美丽（张远）我想应该是你RAP:（李茂）WearetheTOPCOMBINE谁说谁很酷Why选择一个人孤独的追逐心跳在加速时间却停住镌刻的信仰该向谁臣服梦是不会背叛逃亡的俘虏吻是可以囚禁幻觉的信物若即又若离若离又若即的态度伤口就让时间去弥补（金恩圣）停不住说不出什么程度去努力描述风尘已久苍老的石板路不在乎有若无什么地步蒸发身体的温度凝结成雕塑（合唱）当爱重新降临在大地吹散了悲伤的记忆（张远）完成了光荣的意义（合唱）站在重新收获的雨季露出了笑容的美丽（张远）我想应该是你（刘洲成）视线变模糊只剩痛苦来不及挣脱心的束缚（张远）努力地去追逐那道光芒是理想让人勇敢飞翔（合唱）当爱重新降临在大地吹散了悲伤的记忆（张远）完整了光荣的意义（合唱）站在重新收获的雨季露出了笑容的美丽（张远）我想应该是你（合唱）当爱重新降临在大地吹散悲伤的记忆（张远）完成了光荣的意义（合唱）站在重新收获的雨季露出了笑容的美丽（张远）我想应该是你（合唱）当爱重新降临在大地至上励合-下一站永远Hey，girl，对我来说，世界上最珍贵的就是和你在一起的时间我每天都在祈祷身边的你，不是梦Everyday,everynight,Imissyou我穿过了城市的夜半个世界来到你身边我路过的许多誓言还来不及被实现披星戴月（wishwe"llbetogethermeandyou）哦这一天连接两个世界从今以后每个晴天每个雨天靠在我双肩我们之间所有想念也终于不再遥远打败时间（foreverbetogethermeandyou）牵着手写我们的诗篇我的体贴随时都新鲜传送爱的留言EverydayandeverynightImissu每个瞬间我都感谢闭上双眼幸福催眠你的依恋再多一些不疲倦我们下一站永远从今以后每个晴天每个雨天靠在我双肩我们之间所有想念也终于不再遥远打败时间（foreverbetogethermeandyou）用真心写我们的诗篇透过窗边蓝色的海面看你微笑的脸EverydayandeverynightImissu你会发现爱多宽广在我梦里面看见的画面全都是你baby走下去下一站就是永远一份爱一个未来两颗心等待一份爱一种信赖两个人存在我只想每一天都和你说晚安透过窗边蓝色的海面EverydayandeverynightImissuohbaby在我梦里面可以看见所有画面爱全都是你走下去我唯一的心愿透过窗边蓝色的海面看你微笑的脸EverydayandeverynightImissu你会发现爱多宽广在我梦里面看见的画面全都是你baby牵着手下一站就是永远至上励合-Kiss有烟花擦破宇宙这蓝色星球夕阳的街头刚好你在身边经过Iloveyoutobemygirl下雨的午后球鞋都湿透等着你来爱justforyou我可以弹着吉他把爱唱出来等情人节快点到来我的爱冬天为你取暖的信赖我会一直在我站在你门外抱一束玫瑰看起来有点呆想第一时间拥抱再不放开吻你的眼睛saygoodnight你喜欢的色彩请让我和你一起去填满就算从此时光飞快我的吻还在我可以随时送你回家kissgoodbye手机打热线送外卖我的爱因为你的微笑才存在我的爱我的爱会一直陪你到未来我站在你门外抱一束玫瑰看起来有点呆想第一时间拥抱再不放开吻你的眼睛saygoodnight你喜欢的色彩请让我和你一起去填满就算从此时光飞快我的吻还在我看着你的眼睛你靠近的呼吸一个吻感动彻底整个世界都着迷我站在门外等着你抱一束玫瑰看起来有点呆想第一时间拥抱再不放开吻你的眼睛saygoodnight你喜欢的色彩请让我和你一起去填满就算从此时光飞快我的吻还在就算从此时光覆盖有我不孤单foreverwithyou小丑至上励合EP《降临》作词唐恬/作曲金元/编曲金元（刘洲成）雨落在了手心滚烫的是回忆全世界在拥挤我的心好安静要给你我的爱用力演出的精彩就算是游戏我也会尽力（金恩圣）原来你要我学着变勇敢为了让自己离开离开（金恩圣）Ican"tletugo我舍不得放你走（张远）还带着我的爱你要去哪里掩埋（金恩圣）Ican"tletugo请不要给我自由（张远）在你左右我只想做个眼神温柔的小丑（金恩圣）用最单纯的信赖依赖才发现爱其实有点难HO（张远）你的笑一直是我梦想的未来却始终放不开曲终人散蒙住双眼不去看（金恩圣）Ican"tletugo我舍不得放你走（张远）还带着我的爱你要去哪里掩埋（金恩圣）Ican"tletugo请不要给我自由（张远）在你左右我只想做个眼神温柔的小丑我笑得多悲哀你懂吗（刘洲成）戴面具彩排我宁愿扮演个小丑因为爱

(3)letu=u221ax2udu = dxu222b(1+u221ax)^2/u221ax dx=u222b[(1+u)^2/u ] (2udu)=2u222b(1+u)^2 du=(2/3)(1+u)^3 +C=(2/3)(1+u221ax)^3 +C(5)u222b(1->4) (1/x)^2u221a(1+ 1/x) dxletu=1/xdu =-(1/x^2) dxx=1, u=1x=4, u=1/4u222b(1->4) (1/x)^2u221a(1+ 1/x) dx=-u222b(1->1/4) u221a(1+ u) du=u222b(1/4->1) u221a(1+ u) du=(2/3)[ (1+u)^(3/2)]|(1/4->1)=(2/3)[ 2^(3/2) - (5/4)^(3/2) ](7)u222b x/(1+x^4) dxletx^2 = tanu2xdx = (secu)^2 duu222b x/(1+x^4) dx=(1/2)u222b [ (secu)^2 du ]/(secu)^2=(1/2)u222b du=(1/2)u+C=(1/2)arccos(1/x^2) + C(9)u222b (xsec(x^3))^2 dxletx^3 = u3x^2 dx = duu222b (xsec(x^3))^2 dx=(1/3) u222b (secu)^2 du=(1/3)tanu + C=(1/3)tan(x^3) + C

letu=-tdu=-dtt=-π/2, u=π/2t=π/2, u=-π/2∫(-π/2->π/2) (sint)^2/(1+e^t) dt =∫(π/2->-π/2) [(sinu)^2/(1+e^(-u)) ] (-du)=∫(-π/2->π/2) [(sinu)^2/(1+e^(-u)) ] du=∫(-π/2->π/2) [(sint)^2/(1+e^(-t)) ] dt=∫(-π/2->π/2) [e^t. (sint)^2/(1+e^t) ] dt=∫(-π/2->π/2) [(sint)^2 - (sint)^2/(1+e^t) ] dt2∫(-π/2->π/2) (sint)^2/(1+e^t) dt =∫(-π/2->π/2) (sint)^2dt∫(-π/2->π/2) (sint)^2/(1+e^t) dt =(1/2)∫(-π/2->π/2) (sint)^2dt

letu=πxdu=π dxx=0, u=0x=1, u=πlim(n->无穷) (1/n) .[ √(1+cos(π/n) +√(1+cos(2π/n)+...+√(1+cos(nπ/n)]=lim(n->无穷) (1/n)∑(i:1->n) √(1+cos(iπ/n)=∫(0->1) √(1+cos(πx)) dx=∫(0->π) √(1+cosu) [ du/π]=(1/π) ∫(0->π) √(1+cosu) du=(1/π) ∫(0->π) √(1+cosx) dx

(4)letu=u221ax2udu = dxx=0, u=0x=1, u=1u222b(0->1) arccos[ 1/u221a(1+x)] dx=[x.arccos[ 1/u221a(1+x)] ]|(0->1) + u222b(0->1) { x/u221a [1- 1/(1+x)] }[ (-1/2) (1+x)^(-3/2) } dx=u03c0/4 - (1/2)u222b(0->1) u221ax/(1+x) dx =u03c0/4 - (1/2)u222b(0->1) [u/(1+u^2) ][ 2udu]=u03c0/4 -u222b(0->1) u^2/(1+u^2) du=u03c0/4 -u222b(0->1) [1 - 1/(1+u^2) du=u03c0/4 - [u -arctanu]|(0->1)=u03c0/4 - (1 -u03c0/4)=u03c0/2 -1

歌曲名:De ce plang chitarele歌手:O-Zone专辑:Disco-ZoneStii de ce plang chitarele ?Le-au ranit amintirileTu iubire spune-leCe a fost nu s-a pierdut.De ce plang chitareleStiu doar felinareleStrunele amareleCe oare au pierdut?Merg pe strada fetele,Fetele cocheteleMa privesc si-mi striga-n urmaHei!nu-mi raspunzi la SMS!Pe strazi pluteste doar dragostea,Noaptea-i amara fara eaEa cheama cheama pe-altcinevaPlange chitara mea!Stii de ce plang chitareleLe-au ranit amintirileTu iubire spune-leCe-a fost nu s-a pierdut!Plang in noapte struneleStrunele nebunele,Tu iubire spune-leCe a fost nu s-a pierdut!De ce plang chitareleCand rasare soareleCanta pasareleleDespre durerea mea!Pe strazi pluteste doar dragosteaNoaptea-i amara fara eaEa cheama cheama pe-altcineva,Plange chitara mea!Stii de ce plang chitareleLe-au ranit amintirileTu iubire spune-leCe-a fost nu s-a pierdut!Plang in noapte strunele,Strunele nebuneleTu iubire spune-leCe-a fost nu s-a pierdut!Pe strazi pluteste doar dragosteaNoaptea-i amara fara eaEa cheama cheama pe-altcineva,Plange chitara mea!Stii de ce plang chitarele,Le-au ranit amintirileTu iubire spune-leCe-a fost nu s-a pierdut!Plang in noapte strunele,Strunele nebunele ,Tu iubire spune-leCe-a fost nu s-a pierdut!Ce-a fost nu s-a pierdut!Ce-a fost nu s-a pierdut!Ce-a fost nu s-a pierdut!Ce-a fost nu s-a pierdut!http://music.baidu.com/song/14798235

、？:？？？、:跟 肃然起敬破两全其美世界上乐tudletufutou

The Cup Of Life 歌手：ricky martin Do you really want it, yeahDo you really want it, yeahDo you really want it, yeahGo, go go!Go, go go!Ale, ale, ale!Ale, ale, ale!Go, go ,go, go, go!The cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleLa vida es CompeticionHay que sonar Ser campeonLa copa es La bendicionLa ganaras Go, Go, Go!And when you feel the heatThe world is at your feet No one can hold you downIf you really want it Just steal your destinyRight from the hands of fate Reach for the cup of lifeCause your name is on it Do you really want it, yeahDo you really want it, yeahTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleDo you really want itDo you really want itDo you really want itDo you really want ityeahThe cup of life. This is the one Now is the time. Don"t ever stopPush it along. Gotta be strong Push it along. Right to the topComo Cain y AbelEs un partido cruel Tienes que pelearPor una estrella Consigue con honorLa copa del amor Para sobrevivir y luchar por ellaLuchar por ella, yeah Do you really want it, yeahDo you really want it, yeahHere we go! Ale, ale ale!Go, go go! Ale, ale, ale! Arriba va! El mundo esta de pieGo, Go, Go! Ale, ale, aleTu y yo! Ale, ale, ale Go, go ,gol! Ale, ale, aleTonight"s the night we"re gonna celebrate The cup of life! Ale, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleAle, ale, aleDo you really want it, yeah

(1)letu=e^xdu= e^x dx∫ xe^x/(1+e^x)^2 dx=∫ lnu /(1+u)^2 du=-∫ lnu d[1/(1+u)]=-lnu/(1+u) + ∫ du/[u(1+u)]=-lnu/(1+u) + ∫ [1/u-1/(1+u)] du=-lnu/(1+u) + ln|u| - ln|1+u| + C=-x/(1+e^x) + x - ln|1+e^x| + C(2)f(x) =x(cosx)^2f(-x)= -f(x)∫(-π/2->π/2) (x+cosx)^2.cosx dx=∫(-π/2->π/2) [(x^2+(cosx)^2 ].cosx dx +2∫(-π/2->π/2) x(cosx)^2 dx=∫(-π/2->π/2) [(x^2+(cosx)^2 ].cosx dx + 0=2∫(0->π/2) [(x^2+(cosx)^2 ].cosx dx=2∫(0->π/2) x^2. cosx dx +2∫(0->π/2) (cosx)^3 dx=2∫(0->π/2) x^2 dsinx +2∫(0->π/2) [ 1-(sinx)^2] dsinx=2[ x^2.sinx]|(0->π/2) -4∫(0->π/2) xsinx dx + 2[ sinx -(1/3)(sinx)^3]|(0->π/2)=(1/2)π^2 +4∫(0->π/2) xdcosx + 4/3=(1/2)π^2 + 4/3 + 4[xcosx]|(0->π/2) - 4∫(0->π/2) cosx dx=(1/2)π^2 + 4/3 - 4[sinx]|(0->π/2) =(1/2)π^2 + 4/3 + 4=(1/2)π^2 + 16/3

letu=e^xdu/u = dxu222b e^x/(1+e^x) dx=u222b [u/(1+u)] ( du/u)=u222b du/(1+u)=ln|1+u| + C=ln|1+e^x| + C