Indefinite Integration

圖片參考：http://i1096.photobucket.com/albums/g340/pingshek/2011-5-22-2.png?t=1306009488


http://i1096.photobucket.com/albums/g340/pingshek/2011-5-22-2.png?t=1306009488

2011-05-22 14:34:57 補充：
第1題更正如下：

........

∫2dx/(x²+4) = ....... = ∫dθ = θ - C

∫[(3x³ + 12x - 2) / (x² + 4)]dx
= (3x²/2) - tan¯¹(x/2) + C ...... (答案)

2011-05-22 14:49:22 補充：
第一題更改的內容可參考以下連結：
http://i1096.photobucket.com/albums/g340/pingshek/amendment.png?t=1306046891

上面 miraco 答案第四行
Integrate d(theta) = theta + C only