求值:2log3(这个3是角标)2-log3(角标)32/9+log3(角标)8-5log
利用换底公式求值:1.log2 25 ×log3 4 ×log5 9 2.(log4 3+log8 3)(log3 2+
log2(3)+log3(5)+log3(2)=?
2log3底2-log3底32/9+log3底8
(log3 4+log3 8)(log2 3+log2 9)+(log3 根号2)(log9 7)/(log1/3 7)
(log2(5)+log4(125))×log3(2)/log根号3(5)
[log3(4)+log根下3(2)][log2(9)+log4(根3)]
解不等式log3(3^x-1)*log(3^(x+2)-9)
log 243÷log9 =log3^5÷log3^2 =log3^5-log3^2 然后怎么写
0.25^(-1)*(根号3/2)^(1/2)*(27/4)^(1/4)+log2(1/5)*log3(1/8)*log
log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2[log
已知x满足(log3x)^2-log3 x-2≤0,求函数y=f(x)=log3 3x·log3 9x的值域
解不等式(2+log3 x)log3 x>log3 (9x)