万能的v吧与各位大神帮帮我吧，解了这道题，今晚数学老师就是我的人_psv吧_百度贴吧
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万能的v吧与各位大神帮帮我吧，解了这道题，今晚数学老师就是我的人
y=ln(x/m-as)/r^2化简[图片]
看看这道题怎么解急用
被小学打败了。 我知道...
一个直径5.6米的圆里最...
不知道这题有没有答案。...
一个狗熊有一天突然掉进...
刚刚按高考时间刷了一张...
死活解不出来，用空间向...
空里填1-9，冒号是除。...
　　　　　　　　　　...
那么请听题
一个未知数x其余都是常数么
为了不让你祸害他，还是不告诉你了
y=y没有比这更简的了
一款真正“球迷做给球迷”的足球类游戏！
merry Christmas八成了
你们数学老师好浪漫，你直接解出X=多少就是了
先爆照再说
【艳丽舞娘】火爆舞娘 倾情开跳
plus和christ不谐音吧
数学没过关的路过了
想也是圣诞快乐。。
其实看起来就知道是圣诞快乐
内&&容:使用签名档&&
保存至快速回贴一元三次方程怎么解?例如这道题.x^3+5x^2-4x-20=0_百度作业帮
一元三次方程怎么解?例如这道题.x^3+5x^2-4x-20=0
一元三次方程怎么解?例如这道题.x^3+5x^2-4x-20=0
x^3+5x^2-4x-20=0x^2(x+5)=4(x+5)（x+5）(x^2-4)=0（x+5）(x+2)(x-2)=0x+5=0,或x+2=0,或x-2=0x1=-5,x2=-2,x3=2初三加Q,我初三
（x-2)(x+2)(x+5)
一般而言是用配凑因子法，比如这儿可以这么x^2(x+5) - 4(x+5)=0——————（x^2 - 4)(x + 5）=0————结果：x = +2、-2、-5
一元三次方程和一元四次方程的解法在很早以前就被数学家们探索出来了，只是低年级的学生除了个别的对解高次方程有兴趣的外，其他的一般都很少接触到~~~下面就给出十六世纪数学家卡尔达诺给出的一般三次方程 aX^3+bX^2+cX+d=0
(其中a 不为零）的解法
（一）缺项三次方程更一般的形式：X^3+mX=n
卡尔达诺设想了一个大立方...这11道题据说要智商200的人才能全解出来的完美答案_百度文库
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这11道题据说要智商200的人才能全解出来的完美答案
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你可能喜欢5x+15=120这道题怎样解方程?_百度作业帮
5x+15=120这道题怎样解方程?
5x+15=120这道题怎样解方程?
5x+15=1205X=120-155X=105X=21后使用快捷导航没有帐号？
查看: 2004|回复: 5
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大家来帮忙讨论下这道prep破解题，怎么觉得答案有问题呢？
来自CR125.& (30261-!-item-!-188;#058&004144)&Twelve years ago and again five years ago, there were extended periods when the Darfir&&&&&&&&&&&&&&&&Republic's currency, the pundra, was weak:& its value was unusually low relative to the world's most stable currencies.& Both times a weak pundra made Darfir's manufactured products a bargain on world markets, and Darfir's exports were up substantially.& Now some politicians are saying that, in order to cause another similarly sized increase in exports, the government should allow the pundra to become weak again.&Which of the following, if true, provides the government with the strongest grounds to doubt that the politicians' recommendation, if followed, will achieve its aim?&(A) Several of the politicians now recommending that the pundra be allowed to become weak made that same recommendation before each of the last two periods of currency weakness.(B) After several decades of operating well below peak capacity, Darfir's manufacturing sector is now operating at near-peak levels.(C) The economy of a country experiencing a rise in exports will become healthier only if the country's currency is strong or the rise in exports is significant.(D) Those countries whose manufactured products compete with Darfir's on the world market all currently have stable currencies.(E) A sharp improvement in the efficiency of Darfir's manufacturing plants would make Darfir's products a bargain on world markets even without any weakening of the pundra relative to other currencies.大家觉得选什么呢，我粗略看了下觉得选E，反正怎么也不想是B丫，感觉是个风马牛不相及的答案- -高手帮帮忙哦。
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我选B。原文题目是，要再次刺激出口，为啥不能用削弱货币的方法？A是支持削弱货币的说法，错误C说，增加出口的同时，提升货币更健康。题目中没有提到是否要健康的出口。D说，同D国可以竞争出口量的其他国家，货币都很坚挺。这不影响D国利用削弱货币的方法提高出口。E说，即使不用削弱货币的方法，而用提高生产率的方法，也可以提高出口。这并没有否定削弱货币是一种提高出口的有效方法的结论。B说，现在D国的生产力已经接近极限了。所以，再怎么削弱货币，也无法提升生产力，也就无法提升出口。下次发贴时，受累调大字号，谢谢。答案是什么？[此贴子已经被作者于 0:27:04编辑过]
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不好意思丫字太小了，答案是B但是我觉得当有另一个因素也能导致某事件发生的时候，就可以起到对原文因素的削弱作用，也就是说E起到了一定得削弱作用而B选项增加了自己的推理：无法提高生产力，就无法提高出口所以，还是有点不太明白呢[此贴子已经被作者于 17:19:38编辑过]
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provides the government with the strongest grounds to doubt... 注意，原题要求最强的削弱。E选项可能削弱结论，也可能削弱不了，因为“打压货币仍然可以是一种有效的方法”。B选项则是直接否定“打压货币”这种方法。[此贴子已经被作者于 0:13:06编辑过]
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我刚看到别人最新贴出来的一个帖子，题目简直就是一模一样。他的答案可能会让你更明白为什么选B。In 1983 Argonia’s currency, the argon, underwent a reduction in value relative to the world’s strongest currencies. This reduction resulted in a significant increase in Argonia’s exports over 1982 levels. In 1987 a similar reduction in the value of the argon led to another increase in Argonia’s exports. Faced with the need to increase exports yet again, Argonia’s finance minister has proposed another reduction in the value of the argon. Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year? Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year? Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year? A.&& The value of the argon rose sharply last year against the world’s strongest currencies. B.&& In 1988 the argon lost a small amount of its value, and Aronian exports rose slightly in 1989. C.&& The value of Argonia’s exports was lower last year than it was the year before. D.& All of Argonia’s export products are made by factories that were operating at full capacity last year, and new factories would take years to build.&&&E.&& Reductions in the value of the argon have almost always led to significant reductions in the amount of goods and services that Argonians purchase from abroad.[此贴子已经被作者于 14:39:16编辑过]
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我刚看到别人最新贴出来的一个帖子，题目简直就是一模一样。他的答案可能会让你更明白为什么选B。In 1983 Argonia’s currency, the argon, underwent a reduction in value relative to the world’s strongest currencies. This reduction resulted in a significant increase in Argonia’s exports over 1982 levels. In 1987 a similar reduction in the value of the argon led to another increase in Argonia’s exports. Faced with the need to increase exports yet again, Argonia’s finance minister has proposed another reduction in the value of the argon. Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year? Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year? Which of the following, if true, most strongly supports the prediction that the finance minister’s plan will not result in a significant increase in Argonia’s exports next year? A. & The value of the argon rose sharply last year against the world’s strongest currencies. B. & In 1988 the argon lost a small amount of its value, and Aronian exports rose slightly in 1989. C. & The value of Argonia’s exports was lower last year than it was the year before. D. &All of Argonia’s export products are made by factories that were operating at full capacity last year, and new factories would take years to build. & E. & Reductions in the value of the argon have almost always led to significant reductions in the amount of goods and services that Argonians purchase from abroad.[此贴子已经被作者于 14:39:16编辑过]-- by 会员 xfi883 ( 14:39:00)
这个例子非常的好！！赞
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