电大复变函数作业卷(三)

1、专业好文档复变函数作业卷（三）一、判断题1、设c为的解析域d内的一条简单正向闭曲线，则. ( )2、若u, v都是调和函数，则是解析函数。( )3、设在单连通区域d内解析，则是的一个原函数，c为d内的一条正向闭曲线则。 ( ) 4、设是区域d内的调和函数，则函数在d内解析。 ( )5、若函数在d内解析，则函数。( )二、 填空题1、设c为到点的直线段，则2、若c为正向圆周，则3、若c为正向圆周，则4、若函数为区域内的调和函数，则5、若，则 。三、计算、证明题1、设点a,b分别为和，试计算的值，其中c为（1）点到点的直线段；（2）由点沿直线到再到的折线段.解：(1)(2)2.设c为从-2到2的上

2、半圆周，计算积分的值。解：3、计算解：4计算，其中c为正向圆周。解：函数在c内有两点不解析，设5、计算积分，（1）当点0在c内，点1在c外;（2）当点1在c内，点0在c外;（3）当点0，1均在c内;（4）点0，1均在c外。解：（1） 原式= （2） 原式=（3） 原式=（4） 原式=06、证明为调和函数，在求其共轭函数，并写出关于z的表达式。证明：故为调和函数解：v为u的共轭调和函数故又故 令 得：即 if we dont do that it will go on and go on. we have to stop it; we need the courage to do it.his

3、comments came hours after fifa vice-president jeffrey webb - also in london for the fas celebrations - said he wanted to meet ivory coast international toure to discuss his complaint.cska general director roman babaev says the matter has been exaggerated by the ivorian and the british media.blatter,

4、 77, said: it has been decided by the fifa congress that it is a nonsense for racism to be dealt with with fines. you can always find money from somebody to pay them.it is a nonsense to have matches played without spectators because it is against the spirit of football and against the visiting team.

5、 it is all nonsense.we can do something better to fight racism and discrimination.this is one of the villains we have today in our game. but it is only with harsh sanctions that racism and discrimination can be washed out of football.the (lack of) air up there watch mcayman islands-based webb, the h

6、ead of fifas anti-racism taskforce, is in london for the football associations 150th anniversary celebrations and will attend citys premier league match at chelsea on sunday.i am going to be at the match tomorrow and i have asked to meet yaya toure, he told bbc sport.for me its about how he felt and

7、 i would like to speak to him first to find out what his experience was.uefa hasopened disciplinary proceedings against cskafor the racist behaviour of their fans duringcitys 2-1 win.michel platini, president of european footballs governing body, has also ordered an immediate investigation into the

8、referees actions.cska said they were surprised and disappointed by toures complaint. in a statement the russian side added: we found no racist insults from fans of cska.baumgartner the disappointing news: mission aborted.the supersonic descent could happen as early as sunda.the weather plays an impo

9、rtant role in this mission. starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. the balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weath

10、er lives. it will climb higher than the tip of mount everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. as he crosses the boundary layer (called the tropopause),e can expect a lot of turb

11、ulence.the balloon will slowly drift to the edge of space at 120,000 feet ( then, i would assume, he will slowly step out onto something resembling an olympic diving platform.below, the earth becomes the concrete bottom of a swimming pool that he wants to land on, but not too hard. still, hell be tr

12、aveling fast, so despite the distance, it will not be like diving into the deep end of a pool. it will be like he is diving into the shallow end.skydiver preps for the big jumpwhen he jumps, he is expected to reach the speed of sound - 690 mph (1,110 kph) - in less than 40 seconds. like hitting the

13、top of the water, he will begin to slow as he approaches the more dense air closer to earth. but this will not be enough to stop him completely.if he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. his team hopes its not needed. instead,

14、 he plans to deploy his 270-square-foot (25-square-meter) main chute at an altitude of around 5,000 feet (1,524 meters).in order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). he will have a reserve parachute that will open automatically if he loses consciousness at mach speed