1.9^log3(2)-2^[1+1/2log2(5)]2.已知集合A={a,ab,log2(ab)}和集合B={|a|,0,b}相等,求实数a,b的值3.函数y=x^2(-3

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) 关于对数函数log3 (x^2+2)=log3 x+1以log3为底 log3 18-log3 2=log3 16? log3^18-2log3^2的值有选项的 A.1 B.2 C.0 D.log3^2 log3（2）,log3(2^x-1),log3(2^x+11)成等差数列,则x的值为 计算(log3 2)(log2 6-1) log2 1-lg3×log3 2-lg5 解不等式：log3(2x-1) log2 1-lg3×log3 2-lg5 为什么log3(2)=1/log2(3). log2 24-1/log3 2=