(a) prove that lnx ≦ x-1 for all x >0
When does the equality holds?
(b) Let a1, a2, a3, ... , an be n positive real numbers
Define An = 1/n ε(i=1 → n) ai
Gn = [Π (i=1 → n) ai ]^(1/n)
show that Gn≦An when does the equality hold?
pure Gn≦An
2010-03-14 11:29 pm
回答 (3)
2010-03-23 2:45 am
✔ 最佳答案
As follows~ 圖片參考：http://i248.photobucket.com/albums/gg191/ncy_0916/PM-inequality.jpg?t=1269254687
2010-03-16 10:57 pm
要上tutorial , 都係唔答住 xd
2010-03-16 10:52 pm
How about part b??
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