e****d
发帖数: 333 | 1 解析解方程：
x=A*sin(B*x+C). A,B,C已知。
结果最好能表示成 sin(n*C)的级数。不行也可以，给个近似的解，也行，但是就是要
解析。
请问怎么做？
多谢。 |
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s****p
发帖数: 19 | 2 Laplace transformation.
Let F(y)=\int_0^\inf e^{-yx} sin(x)/x dx then
-F'(y)=\int_0^\inf e^{-yx}sin(x) dx, which has close form. |
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w********0
发帖数: 1211 | 3 就是求sin(x)/x从负无穷到正无穷的积分。
前几步我倒是明白，把sin(x)看作exp(ix)的虚部，所以只要求exp(iz)/z在实轴上积分
，再取虚部即可。积分时先从有限的-R到R积分，最后令R趋向无穷。
开始围道，0点附近用一个小的半圆弧绕过去， R到-R走一个大的半圆弧，这样围出一
个接近半圆的区域。
小的半圆弧倒不难，如果从上面绕，那整个区域里头全纯，围道积分等于零，而小半圆
弧是顺时针的，上面积分为-Pi*i。如果从下面绕，那整个区域里有0点这一个奇点，留
数定理得出围道积分等于2*Pi*i, 而小半圆弧是逆时针的，上面积分为Pi*i。所以怎么
着都能差出个Pi*i。
问题是 -- 怎么证明在外面那个大半圆弧上积分是趋向于零的（当R趋向无穷大）？ 通
常是用不等式让它小于一个趋向于零的东西，但这里我怎么弄不出来了。 |
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z******o
发帖数: 1224 | 4 Wt follows N(0,t) which has a symmetric density f_t(x)
sin(x) is odd. Thus, \int sin(x) f_t(x) dx = 0 |
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w*******y
发帖数: 60932 | 5 Hi Guys:
First time poster so please be gentle with the comments.
Buy.com is selling new copies of Sin & Punishment: Star Successor for
Nintendo Wii for $10 with free shipping. This is a great 2010 action shooter
game for the Wii that supports multiplayer and online connectivity.
GameSpot gave it 8.5/10.
You can also earn 10 Super Points with this item if you shop with them often.
Enjoy!
Link:
http://www.buy.com/prod/sin-punishment-star-successor/q/loc/108
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l*******1
发帖数: 16217 | 6 底下的回复笑喷了 YouTube 的回复风格是最想菌斑的
7 sins of india1, no toilet2, no toliet paper3, shit everywhere 4, eating
cow shit5, curry looks like shit6, curry taste like shit7, skin color like
shit |
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发帖数: 1 | 7 求极限，在线等limit[x,0,(1/x^2-1/sin^2[x])=-1/3
怎么求出来的，我一直算是0，看了图像知道错了是-1/3，过程怎么写？ |
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S****t
发帖数: 2183 | 8 利用sin(x)的二阶泰勒展开式就可以算出来了！ |
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发帖数: 1 | 9 Guo Wengui's ten Deadly sins
If Guo Wengui who longing for "great" US is judged by US court, it might be
punished heavier．Fugitive Chinese billionaire Guo Wengui has been charged
with at least ten crimes according to media reports.
Guo Wengui who fled to the United States has been advertised to advocate the
rule of law. But as his a pile of criminal behavior exposure, the behavior
of Guo Wengui defied and trampling the rule of law is gradually exposed to
the world.
In China, his criminal associa... 阅读全帖 |
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b*d
发帖数: 161 | 10 这个辞职的人Christopher Buckley的父亲是national review的创始人。没记错的话，
他父亲于50年代创立national review这一最具影响的保守派杂志，是保守主义最早期
的推动者。
The Sins of the Father
By Chris Suellentrop
Having endorsed Barack Obama in the digital pages of The Daily Beast, Tina
Brown’s new online magazine, in a column titled “Sorry, Dad, I’m Voting
for Obama,” Christopher Buckley writes about the repercussions of his
decision in a new column, “Sorry, Dad, I Was Sacked.”
“Within hours of my endorsement appearing in The Daily Beast it became
clear |
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b******8
发帖数: 1251 | 12 只看到写SIN号，没有地方写ITIN，父母已经有了ITIN#，我可以写ITIN# 再注明吗？还
是就留空？加州的。谢谢 |
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w*****2
发帖数: 386 | 13 据说银行有给human resource office 打电话，被回答没有我的sin 卡记录。
怎么回事要多长时间才能在记录上显示啊。
白白在车行呆了一天。 |
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d******1
发帖数: 282 | 14 求脑补，神马是SIN卡啊？Did you mean SSN? |
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B***E
发帖数: 2001 | 15 枫叶国叫SIN, 黑膜三儿国叫SSN
[发表自未名空间手机版 - m.mitbbs.com] |
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s****b
发帖数: 131 | 16 还真有点像，呵呵。
还是最喜欢nancy了，她原来演dark angel时，就觉得特漂亮，sin city里面那舞跳的，
热血沸腾啊，
不过据说原著里面那段舞可是topless的，hehe
喜
感
而
。 |
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N*****k
发帖数: 240 | 17 【 以下文字转载自 Movie 讨论区,原文如下 】
发信人: exotic (神圣无敌MAGE), 信区: Movie
标 题: 看了SIN CITY的人来讲讲
发信站: Unknown Space - 未名空间 (Mon Apr 18 02:49:25 2005) WWW-POST
到底讲了啥啊? 没看懂.... 几个主要人物间到底是什么关系啊? |
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g******r
发帖数: 347 | 18 电影天注定A Touch Of Sin 在纽约还在放映么？ |
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e*******e
发帖数: 812 | 19 student authorization 吧，
没听说sin卡还有悲剧的， |
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d*********s
发帖数: 297 | 20 俺们系小米好像说今年起不再给国际学生sin号了。 |
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s****h
发帖数: 3979 | 21 同事小孩的10年级数学题
已知 sin(x)+cos(x) = 3x
求x?
求解答 |
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y*****y
发帖数: 3433 | 24 看到本地店里有demo的soul 7, 就是短了点，172 cm。我身高170，不过比较重，估计
要180cm的比较合适。听说soul 7实际长度没那么长。
那里还有套180cm的sin 7, $450, 品相很好、值得买么？dem的ski品相好是不是说明没
人愿意滑，性能不行啊。 |
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y*****y
发帖数: 3433 | 25 看了看sin 7 说是intermediate to advanced, 算了，还是拿我的backcountry
setting继续凑合一年吧 |
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h****z
发帖数: 1996 | 26 Five men kick -> 0 for 5 Ace
Lee Sin大招踢中5人，除了Caitlyn全部被Varus大招定住，Ace！
Baron steal -> Come back at 30 min and 7k gold behind
今天早上的比赛，Ozone vs Frost，BO5最后一场Blind Pick Mode。Ozone在这视频之
前输了两个dragon fight，经济上落后7k。
DanDy神奇的Baron steal后推上高地，团战中Ozone完成逆转，直接结束比赛。Ozone四
人除了Vayne都被Frost的Amumu flash+ulti先手定住，但是在秒掉Zed和Twitch的情况
下还是赢了团战。 |
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C******t
发帖数: 257 | 27 请跟贴支持你认为较佳的影片
1/8区
1. 活着
2. Sin City |
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s****t
发帖数: 17096 | 32 A dame to kill for:
顺便回顾一下经典的sin city 1 trailer
记得当年在不知情的情况下在影院看到这个trailer，惊呆了 |
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P*******e
发帖数: 39399 | 33 sin city 1可是开创性的 这也是我老为啥赏识Rodriguez
Harnet 那个短片是 Rodriguez自筹资金拍的
2的trailer看上去一般 Aug.22的档期感觉也很不自信。。。 |
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s****t
发帖数: 17096 | 34 A dame to kill for:
顺便回顾一下经典的sin city 1 trailer
记得当年在不知情的情况下在影院看到这个trailer，惊呆了 |
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P*******e
发帖数: 39399 | 35 sin city 1可是开创性的 这也是我老为啥赏识Rodriguez
Harnet 那个短片是 Rodriguez自筹资金拍的
2的trailer看上去一般 Aug.22的档期感觉也很不自信。。。 |
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l****z
发帖数: 29846 | 37 她在sin city是哪个角色? 我都不记得了. |
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m****a
发帖数: 1257 | 38 sin city 2 好像是 1 的前传吧？
所以死人都活着。 |
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m*******l
发帖数: 370 | 39 The Seven Deadly Sins of Divorce
Experts Weigh In On How to Make Splitting Up Less PainfulJune 10, 2010
By Natasha Burton
Whether you are happily married now, or hoping to be one day, there's one
topic you'd probably rather not think about: divorce. Yet, most of us know
at least one wedded couple who has split up. And then there's that ominous
50 percent statistic, which often scares us into believing that a marriage's
survival is as subject to chance as whether a coin will flip heads or tails
. |
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f**********c
发帖数: 651 | 40 作者：理查德.穆勒（Richard Muller)，UC Berkeley物理系教授
http://www.richardmuller.com/
http://www.amazon.com/Sins-Jesus-Richard-Muller/dp/product-
description/0967276519
An historical novel of a human Jesus who uses illusion
and deception to persuade his followers that he teaches
truth. Convinced that he delivers the word of God, given
to him by his father Joseph and through "little whispers",
Jesus discovers that the Jews ignore his preaching.
They have been warned to beware false prophets, and that
true one |
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m****a
发帖数: 9485 | 41 http://www.beliefnet.com/Faiths/Christianity/2004/11/We-Have-Sinned-Against-You.aspx
A leading evangelical speaks at the Mormon Tabernacle and says evangelicals
have spread lies about LDS beliefs.
For the first time in 105 years, non-Mormons mounted the pulpit at the
Mormon Tabernacle in Salt Lake City on Nov. 14. The event, dubbed an "
Evening of Friendship," was organized by Standing Together, a network of 100
evangelical churches trying to improve relations with members of The Church
of Jesus |
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T*****n
发帖数: 2456 | 42 【 以下文字转载自 TrustInJesus 讨论区 】
发信人: Torasan (真辛苦), 信区: TrustInJesus
标 题: The Thorn Birds - Original Sin
发信站: BBS 未名空间站 (Sun Dec 8 03:39:37 2013, 美东) |
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s******g
发帖数: 5074 | 43 sin更像是过错，而且是主观犯下的过错。
所以说世人都是罪人，这不恰当。
正确的说法是世人都是有各种过错的，这样讲就中听的多了。
＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝
是不是我们应该把“罪”人，和“过错”的人有力的区别开来。
比如杀人放火，偷窃诈骗这都是罪人。 |
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