若a与b护卫倒数,且m与n互为相反数,求m÷ab-（-n）÷ab的值 急

A

B

我们要保护环境

由题意得：|X-Y+2|=-√(X+Y-1)
即：|X-Y+2|+√(X+Y-1)=0
∴|X-Y+2|=0
且√(X+Y-1)=0
即：
X-Y+2=0
X+Y-1=0
解得：
X=-1/2
Y=3/2
则22X+2Y=22×(-1/2)+2×(3/2)=-11+3=-8
∴立方下(22X+2Y)=立方下(-8)=-2

时针每分钟走0.5度
分针每分钟走6度
十点时,时针距12点角度为60度
设三分钟前时间为10点x分,则六分钟后时间为x+9分
六分钟后分针距12点角度为6（x+9）
三分钟前时针距12点角度为60-0.5x
六分钟后分针距12点角度+三分钟前时针距12点角度=180度
则有6（x+9）+60-0.5x=180
x为12.
三分钟前时间为10:12,现在为10:09

保护绿色的意思,与破坏环境的行为做斗争

(a+b)/m+mcd-b/a=0/±3+（±）3+1=4或-2

a+b+2012cd-2011x =a-b+2012乘以1-2011乘以1 =1

谭千秋老师誓死护卫学生的高大形象,我们怎么会忘记呢?
这是你要的回答么?
求采纳~·~·~求赞同~·~·~

3 倒数是相对而言的 比如 a*1/a=1 那么a就是1/a 的倒数 1/a是a的倒数

选A.
淀粉和纤维素都可以用（C6H10O5)n来表示,但是不同的淀粉其n值是不一样,不同的纤维素也是不一样的,淀粉就纤维素之间的n也是不一样的,所以不是同分异构体.

1：f(x)=a^(x+1)-2
f(x)的反函数为g（x）=loga（x+2）-1
2：g(x)在[0,1]上的最大值和最小值为g(1),g(0)
g(1)=loga(3)-1 ,g(0)=loga(2)-1
g(1)+g(0)=0
解出 a=√6
3：
令g（x）过坐标原点
有g（0）=loga(2)-1=0
得出a=2
若反函数图像不经过第二象限
a>=2

第一个方程可以减化为X＝2K－1,第二个方程可以减化为X＝（2K+61）/21,因为两个方程的解互为相反数,可以形成等式,2K－1＝－（2K+61）/21,从中计算可得K＝－10/11,然后代入两个减化后的方程式,可得第一个方程的解为－31/11,第二议程的解为31/11.

“城阙辅三秦”中的“辅”一般释作“护持、拱卫、护辅、夹辅”一类的意义,或认为是句式的倒装,“辅”应该作“以……为辅”解.但这样的解释与事理、诗意均不谐洽,颇为牵强.诗句中“辅”和“望”形成对文,也应该有“望...

1,1
3,(2003+n)的n次方

慷慨—大方 护卫—袭击 侵袭—侵略

原式=2x-1
（a+b+cd）=1 因为a、b互为相反数 所以为0 而c、d互为倒数 所以cd=1 所以(a+b+cd)x=x
同理（-cd）=-1 而-1的2003次方亦为-1 因为2003是基数 （a+b）=0 且0的任何次方均为0 所以(a+b)^2004=0
全部加起来便是x+x-1+0了
所以最后得2x-1

2a+3的立方根于1—3b的立方根护卫相反数
故
2a+3＋1—3b＝0
这个题目求的不对吧?

1、因为母亲是个哑巴,更增添了别的鄙夷和“我”的自卑,因而越帮越乱,使“我”无地自容.
2、小小的“我”还不懂母爱,逆反心理使“我”和母亲斗争着,斗争赢了,“我”内心兴奋不已.
3、母亲很孤独,她明知道儿子嫌弃她,但出于母爱的本能,她无法不关心儿子.

由已知得 ab=1
所以a=1/b
a/7=1/7b
所以七分之A比B分之5＝1/35

Y1+Y2=0
1/5X+1+2X+1/4=0
11/5X=-5/4
X=-25/44

7

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
Churchill名言
01 "Never, never, never, never give up."
永远,永远,永远,永远都不要放弃.
02 "The whole history of the world is summed up in the fact that, when nations are strong, they are not always just, and when they wish to be just, they are no longer strong."
世界历史可以总结为：当一个国家强大的时候,它并不总是公正的.而当它试图去变得公正时,它就不再强大.
03 "Courage is going from failure to failure without losing enthusiasm."
勇气就是不断失败,而不丧失热情.
04 "This is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning."
这不是结束.这甚至不是结束的开始.但,这可能是开始的结束.
05 "I like a man who grins when he fights."
我喜欢微笑着战斗的人.
06 "True genius resides in the capacity for evaluation of uncertain, hazardous, and conflicting information."
真正的才华体现在对未知、危险和矛盾的信息的判断之中.
07 "Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen."
站起来说话需要勇气.坐下倾听同样需要.
08 "Study history, study history. In history lies all the secrets of statecraft."
学习历史,学习历史.历史中有一切治国之道.
09 "Success is going from failure to failure without losing enthusiasm."
成功就是不断失败,而不丧失热情.
10 "We shall draw from the heart of suffering itself the means of inspiration and survival."
我们应从遭受苦难的心中获得呼吸、生存的方法.
11 "Attitude is a little thing that makes a big difference."
态度是小事,但能造成很大区别.
12 "We make a living by what we get, but we make a life by what we give."
我们靠获得的东西生存.但我们靠给予的东西生活.
13 "A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
悲观主义者从每个机遇中看到困难,乐观主义者从每个困难中看到机遇.
14 "Nothing is more costly, nothing is more sterile, than vengeance"
没有比复仇更昂贵、更没用的事情了.
15 "If you mean to profit, learn to please."
如果你想挣钱,学会高兴.
16 "It is no use saying, 'We are doing our best.' You have got to succeed in doing what is necessary."
说“我们尽力了”,没有用.你要在必须做的事情上成功.
17 "Personally, I'm always ready to learn, although I do not always like being taught."
就我个人而言,我总是做好学习的准备,虽然我不总是喜欢被人教育.
18 "I never worry about action, but only about inaction"
我从不担心行动.而只担心没有任何行动.
19 "The price of greatness is responsibility."
伟大的代价是责任.
20 "I have nothing to offer but blood, toil, tears and sweat."
我能奉献的,只有鲜血、苦干、眼泪和汗水.
21 "All the great things are simple, and many can be expressed in a single word: freedom; justice; honor; duty; mercy; hope"
伟大的事情都很简单.而且大多数都可以被凝结成一个简单的单词：自由；公正；荣誉；责任；仁慈；希望.
22 "Solitary trees, if they grow at all, grow strong."
孤独的树如果成长,就会成长得非常茁壮.
23 "No crime is so great as daring to excel."
彰显自己是最大的罪恶.
24 "Difficulties mastered are opportunities won"
克服困难就是赢得机遇.
25 "The first quality that is needed is audacity."
最需要的品质就是无畏.
26 "There is nothing more exhilarating than to be shot at without result."
没有比被射击而未被击中更令人兴奋的事情了.
27 "There is nothing wrong with change, if it is in the right direction"
改变没有错,如果方向正确的话.
28 "It is always wise to look ahead, but difficult to look further than you can see."
向前看总是明智的.但试图高瞻远瞩很是困难.
29 "When the eagles are silent, the parrots begin to jabber."
当老鹰沉默时,鹦鹉就开始叽叽喳喳了.
30 "Kites rise highest against the wind, not with it."
风筝顶着风高飞,而不是顺着风.
31 "In war, you can only be killed once, but in politics, many times."
在战争中,你只会被干掉一次.而在政治中,可以很多次.
32 "A love for tradition has never weakened a nation, indeed it has strengthened nations in their hour of peril"
热爱传统从不会使一个国家变弱,甚至在生死存亡的关键时刻,他会使国家更强大.
33 "Politics is almost as exciting as war, and quite as dangerous. In war you can only be killed once, but in politics many times."
政治像战争一样刺激,一样危险.在战争中,你只会被干掉一次.而在政治中,可以很多次.
34 "History is written by the victors."
历史是由胜利者书写的.
35 "We contend that for a nation to try to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle"
我们说一个企图靠收税变富饶的国家就像一个坐在吊桶里,想拉绳让自己升上去的人一样.
36 "A lie gets halfway around the world before the truth has a chance to get its pants on."
真理还没机会穿上裤子时谎言已经满街跑了.
37 "In time of war, when truth is so precious, it must be attended by a bodyguard of lies"
在战争时期,真实是如此可贵,以至于它必须靠一些谎言保卫着.
38 "The shadow of victory is disillusion"
胜利总伴随着打消幻想.
39 "Success is not final, failure is not fatal: it is the courage to continue that counts."
胜利不是结束,失败不是死亡.真正重要的是敢于继续的勇气.
40 "No comment" is a splendid expression. I am using it again and again."
（对此事）不发表评论/无法可说是个伟大的说法,我总使用它.
41 "When you have to kill a man it costs nothing to be polite."
当你必须杀一个人时,对他客气点不会花费什么.
42 “A man is about as big as the things that make him angry"
从让一个人生气的事情大小就能看出一个人的价值.
43 "An appeaser is one who feeds a crocodile - hoping it will eat him last"
绥靖主义者是在喂鳄鱼----可预计最后鳄鱼也把他给吃了.
44 "I like pigs. Dogs look up to us. Cats look down on us. Pigs treat us as equals."
我喜欢猪.狗总是仰视我们,而猫瞧不起我们.只有猪对我们平等对待.
45 "It is certainly more agreeable to have power to give than to receive"
有能力给予当然比有能力接受来得更让人愉快.
46 "Healthy citizens are the greatest asset any country can have"
健康的国民是一个国家能拥有的最大财富.
47 "We shall show mercy, but we shall not ask for it"
我们会展示出我们的仁慈.但我们不会向别人要求仁慈.
48 "We have always found the Irish a bit odd. They refuse to be English."
我们总觉得爱尔兰人很奇怪,他们拒绝成为英国人!
49 "The United States is like giant boiler. Once the fire is lighted under it, there is no limit to the power it can generate."
美国像是一个巨大的锅炉.只要下面点着火,它会产生无限的能量.
50 "The Arabs are a backwards people who eat nothing but Camel dung"
阿拉伯人是一群只会吃驴粪的倒退民族.

与Y轴交点纵坐标互为相反数,即X=0时Y1与Y2取值相反,将X=0带入Y1与Y2函数,得到（m方-2）*0+1-m=-（（m方-4）*0+2m+3）,（是+3还是-3?以下是按照+3计算的）
1-m=-（2m+3）,
解出 m=-4,
选 A

a+b=0
m=±2
所以原式=0±2=±2

1.5+5+(-20)=-10,只有-20是负数
2.-4+1+(-1)=0,1和-1互为相反数
3.0+(-3)=-3,0是其中的一个加数.

有趣的近义词----好玩、趣味 兴趣 乐趣
护卫的近义词-----保护 保卫 守卫