1/2log3(6)-log3(根号2);log1/2(48)-log1/2(3);lg25/12+lg 48

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1/2log3(6)-log3(根号2);log1/2(48)-log1/2(3);lg25/12+lg 48
1/2log3(6)-log3(根号2);
log1/2(48)-log1/2(3);
lg25/12+lg 48

1/2log3(6)-log3(根号2);log1/2(48)-log1/2(3);lg25/12+lg 48
1‘、原式=log3(√6)-log3(√2)
=log3(√6/√2)
=log3(√3)
=1/2..
2、原式=log1/2(48/3)
=log1/2(16)
=log1/2[(1/2)^(-4)]
=-4..
注：也可以套换底公式：
log1/2(16)=log2(16)/log2(1/2)
=4/(-1)
=-4.
3、原式=lg[(25/12)*48]
=lg100
=2..

log3 18-log3 2=log3 16? 1/2log3(6)-log3(根号2);log1/2(48)-log1/2(3);lg25/12+lg 48 lg根号2+lg根号5+log3 1 计算(log3 2)(log2 6-1) 3^(1+log3 6) -2^(4+log2 3)+10^3lg3+(9/1)^log3^4题有个错误，+(9/1)^log3^4改为+(9/1)^log3^4-1 log2(6)*log3(6)-[log2(3)+log3(2)]的值 (log2 6)×(log3 6)-(log2 3+log3 2)= log2(6)*log3(6)-[log2(3)+log3(2)]的值 (log2 6)×(log3 6)-(log2 3+log3 2)= log3 6-log3 2=?给好评…… log3 2+log3 1/2 +lg20 +lg5等于多少 log3(x^2-3)=1+log3(x-5/3) log3 5-log3 15+1/2log9 27 的值 log3（2）+log3（x)=1,则X=? 计算log3[(9^2 * 27^(1/3))/3^(log3 234)] log3¹²怎么化成2log3²+1 log3(2)+log3(x)=1,则x=? 已知log3(2x-1)