1..设1/log2 3+1/log5 3=n,那么n的值的区间 2..（log以5为底1/5的对数）^3的值

lg(1/4)-lg2(5) 2log5(10)+log5(0.25) 2log2(25)-3log2(64) log2(log2(16) ) 计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15 log2(log5 x)=-1 2^(1/2log2 3)+(1/25)^log5 3= 比较1/log5(19)+2/log3(19)+3/log2(19) 和 1/log2（派）+2/log5（派）大小 计算log3(1/9)+lg(1/10)+log2(6)-log2(3)+5^[log5(3)] 2log5(底数) 25+3log2(底数) 64-8log2 (底数)1的值为是多少, 1、计算log5^35+2log1/2^根号2-log5^1/50-log5^14 2、已知log3^7=a,log2^3=b,求log21^28 求下列各式的值 1）log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4）log3 5-log3 15 log5 2+log5 3+log5 1/6=? 1..设1/log2 3+1/log5 3=n,那么n的值的区间 2..（log以5为底1/5的对数）^3的值 证明1/log5(16)+1/2log3(16)+1/3log2(16)＜1 log2(2)+log5(1)-log1/3(1/27)+[3^log3(5)]^2+3^-log3(2)=? 求log2(1/125)·log3(1/32)·log5(1/3) 化简:log2 2+log5 1-3^(2log9 5)+(3log3 5)^2+3^log3 2 1/log5^7+1/log3^7+1/log2^7 ,求值 证明不等式1/log5(19)+2/log3(19)+3/log2(19) 证明不等式1/(log5(19))+(2/log3(19))+(3/log2(19))