loga2=m,loga3=n,
==>a^M=2 a^N=3
所以a^(2M+N)=(a^M)*(a^M)*(a^N)
=2*2*3=12
lg108=1/2(lg(36)+lg(3))
=1/2 (lg(4*9)+lg3)
=1/2 (2lg(2)+3lg(3))
=1.01665
你的采纳是我回答的动力!
loga2=m,loga3=n,
==>a^M=2 a^N=3
所以a^(2M+N)=(a^M)*(a^M)*(a^N)
=2*2*3=12
lg108=1/2(lg(36)+lg(3))
=1/2 (lg(4*9)+lg3)
=1/2 (2lg(2)+3lg(3))
=1.01665
你的采纳是我回答的动力!