作者darkseer (進入無限期公假)
看板IMO_Taiwan
標題[問題] 兩個變數的不等式
時間Tue Nov 2 11:15:40 2004
Source:Mathlink
Let a,b be arbitrary positive reals. Show that
1 1 1
----------- + ----------- >= ------------
1+a+a^2+a^3 1+b+b^2+b^3 1+(ab)^(3/2)
How can an inequality with only two variables be so hard?
It costs me more than two hours...
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