(log43+log83)(log32+log92)
=(log23/log24+log23/log28)(log32+log32/log39)
=(log23/2+log23/3)(log32+log32/2)
=5/6log23*3/2log32
=5/4
楼上的
过程要认真写
你那样写不给分的
(log43+log83)(log32+log92)
=(log23/log24+log23/log28)(log32+log32/log39)
=(log23/2+log23/3)(log32+log32/2)
=5/6log23*3/2log32
=5/4
楼上的
过程要认真写
你那样写不给分的