Integration
好難,完全冇頭緒Slove the following integration:
a) in 1/2/(1+x3/4)]dx
b) in sqrt[(1-x)(1+x)]/x dx
c) in (2+x)/sqrt(4x2-4x+5)dx
d) in dx/2-x+1)]
e) in dx/(2sinx+sin2x)
f) in e3x(cot2x-3cotx+1)dx a) Let http://upload.wikimedia.org/math/b/8/3/b834b4260b243928ee605f2ae6e61618.png,
http://upload.wikimedia.org/math/2/1/8/218635fda3388026c84320ae7ae2ac42.png
http://upload.wikimedia.org/math/5/c/0/5c0e4024583e18ebead85576e2addf7a.png
http://upload.wikimedia.org/math/4/0/6/4062b08727c26d2ed2253f9a17d1b387.png
b) Lethttp://upload.wikimedia.org/math/b/7/0/b703bf77a64f221eedf5c4320074c0fa.png
http://upload.wikimedia.org/math/8/c/d/8cdc2f7667b70f65381a565347d9270f.png
http://upload.wikimedia.org/math/0/9/b/09b963114d5f39fa69605a70db63ffe7.png(...既只係簡單運算,我唔打埋出黎啦)
c)http://upload.wikimedia.org/math/7/a/9/7a97531ec61a8e932ddf78142be44de7.png
http://upload.wikimedia.org/math/2/1/1/2110595befdcd5b684f56e369341d168.png
http://upload.wikimedia.org/math/a/d/7/ad72cf972bc20fb148e05fe91a566102.png
d)試下自己做啦
e)http://upload.wikimedia.org/math/8/9/7/8972cbd56e925bf5a9784c249989120b.png (Let t=cosx)
http://upload.wikimedia.org/math/4/b/a/4ba2b43fb955151d19a169a3dcc7d654.png
f)諗緊,呢條真係幾難-.- 呢d係f.幾數黎-.- f.5 module數 呢種程度,pure都唔會出
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