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中科新闻网
时间:2024/06/01 04:52:53
a1,a2,a3...,aN 是N个正数,且
a1*a2*a3*...*aN=1
试证
(2+a1)(2+a2)(2+a3)...(2+aN)≥3^N
HELP!!!~~~~
HELP!!!!
HELP!!!
HELP~~~~~~~~~~~~~~~~~~~
help~~~~~~~!!!
help!!!!!
Help!~~~
help !!!
HELP!!!
HELP!!!!!!!!!!!!