题目应是 log3(27开四次方/3)xlog5[4^1/2log210-(3根号3)2/3-7^log7 2]
=log3(3^(1/4))xlog5[2^log210-(3^(3/2))^2/3-2]
=1/4xlog5[10-3-2]
=1/4xlog5 5
=1/4