log3(x)*log3(y)=1因为x>1,y>1所以log3(x)＞0,log3(y)＞0√(log3(x)*log3(y))≤1/2(log3(x)+log3(y))=1/2log3(xy)1/2log3(xy)≥√(log3(x)*log3(y))=1log3(xy)≥2xy≥9当xy最小时,即xy=9此时x=y=3xy的最小值是_9___x...