pure integration

As follows:

圖片參考：http://hk.geocities.com/stevieg_1023/Intgxx1.gif


圖片參考：http://hk.geocities.com/stevieg_1023/Intgxx2.gif


2009-06-07 14:19:45 補充：
The solution of question no.2 is a bit wrong...I will give the correct one later...

2009-06-07 14:57:14 補充：
okok...No problem...

can you post the answer here and I will study the answer ...

And I am now not at home...I will home before 4.

2009-06-07 14:58:25 補充：
^^ also you are welcome to add me MSN : [email protected]

2009-06-07 16:26:01 補充：
For the extra two questions , please visit :
http://i707.photobucket.com/albums/ww74/stevieg90/05-18.gif
http://i707.photobucket.com/albums/ww74/stevieg90/06-12.gif

雖然我未學點In哩d數~
但我之前上網搵左個website幾好架
佢可以幫你In, d ,etc
if你想知詳細d既steps, 按show steps就k
link: http://www.wolframalpha.com/
Integrate: 1/ (1 + x^2 )^2 dx
http://www29.wolframalpha.com/input/?i=Integrate+1%2F+%281+%2B+x%5E2+%29%5E2+dx+/
Integrate: 1/ ( 5 + 4sin2x ) dx
http://www29.wolframalpha.com/input/?i=Integrate+1%2F+%28+5+%2B+4sin2x+%29+dx+/
Integrate: x+4 / (x-1)(x^2+4) dx
http://www29.wolframalpha.com/input/?i=Integrate+%28x%2B4%29%2F%5B%28x-1%29%28x%5E2%2B4%29%5D+dx
Integrate: x^2/(x^2+2x+5) dx
http://www29.wolframalpha.com/input/?i=Integrate+x%5E2%2F%28x%5E2%2B2x%2B5%29+dx+/

2009-06-07 15:16:56 補充：
sorry
請把最尾果個"/" del左先上

非常正確和有用.多謝!!!

2009-06-07 22:41:40 補充：
個網都好有用呀....多謝你...