|-a|=_2_;则a=__

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|-a|=_2_;则a=__
设a、b为正数,且a+b=1,则1/2a+1/b的最小值是__

再问:为什么直接用基本不等式不行再答:因为a,b不满足a+b=1再问:和a+b=1有什么关系再答:你等等,我写给胸再答:给你再答:懂了麻烦好评,谢谢再答:再问:太感谢了,谢谢再问:再答:?再答:这个不

设函数f(x)=(x+1)(x+a)/x为奇函数,则a=__

因为f(x)=(x+1)(x+a)/x=(x^2+(a+1)x+1)/x=x+1/x+(a+1).所以若要f(x)为奇函数,即对任意的非零实数x,均有f(-x)=-f(x),因此f(-x)=-x-1/

英语翻译Ann is _1_ English girl.She is fourteen.She is a _2_ stu

Annis_an_Englishgirl.Sheisfourteen.Sheisa_middleschool_student.HerteacherisMissWhiteAnnhelpsherteach

初中英语看图填空A young man _1_ down an old man ,and went on _2_ all

1.knocked2.going3.happened4.lost5.nothing6.lying7.unless8.stand9.what10.picked

补全对话.A:_1__are you doing now ,Li Hua?B:I'm going to _2_.Ther

1.What2.school3.no4.late5.time6.at7.wrong8.watch9.is10.Thank

3a+2b=3,则8-6a-4b=__

8-6a-4b=8-2(3a+2b)=8-2*3=2

函数y=根号x+根号(x+4)的最小值为_2_,怎么算

√x和√(x+4)都是增函数所以y是增函数定义域是x>=0,x+4>=0所以是x>=0所以x=0,y=最小=2

A²+B²=___(A-B)__

(A+B)(A-B)+2B的平方

求补全对话答案:A:Hello!B:Hello!May I _1_ _2_ Jim,please?A:I'm _3_he

1.speak2.to3.sorry4.right5.a6.message7.a8.lot9.my10.pleasure

已知 log (a) ab=1/p ,则 log (ab) a/b=__ __.

log(a)ab=1/p,Log(a)a+Log(a)b=1/p,1+Log(a)b=1/pLog(a)b=(1-p)/plog(ab)a/b=(换底)=[Log(a)a/b]/Log(a)(ab)=

a²+b²=(a+b)²+__

这么多你就给5分.还是自己做吧少年,我自己都还有60多张卷子要做嘞再问:。。。一直没注意悬赏那里,加悬赏好了。。你要多少?其实没那么多,只不过重复发了两次,机子卡了而已!!再答:1•-2a

a^2-3a __ __=2a^2 2a

a^2-3a+a^2+5a=2a^22a

Dongdong,look _1_ this picture.This is a _2_ of a classroom.

CBDABADCDC不明白哪一节可以追问,祝你学习进步!再问:第8题为什么是c不是b吗再答:帽子不是把整个人包起来吧?with表一种伴随状态,像thegirlwiththelonghair一样,而不是

This is my own bag.=This is a __ __ __ __

Thisisabagofmyown.在英文中,短语ofone'sown意思是:属于某人自己的.

完成对话初一下册英语A:_1_ _2_.Can I _3_ your pencil?B:_4_,I don"t have

A:_Excuse__me_.CanI_borrow_yourpencil?B:_Sorry_,Idon"thave_one_.A:Iwantto_go_totheshop._Would_youlik

完形填空 bill is a school boy.he _1_washing his face and _2_._3_

1.isusedto2.hands3.after.第三句不完整答案不好填.而且有要求一空一词还是不限?