log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
log(10000)/log(10)
2^log(4)(3)加3^log(9)(1/4)加5^log(1/25)(2)
化简2log`5(10)+log`3(0.25)+log`1/5(125)=
-log10^(10^-3/2) 怎么写成log +log 或log-log的形式
[log(5)√2·log(49)81]/[log(25)(1/3)·log(7)三倍根号四]
log(2)1/25乘以log(3)1/8乘以log(5)1/9
log(2)(25)×log(3)(1/16)×log(5)(1/9)=?
-5log⑨4+log③32/9-5^log⑤3-(1/64)^-2/3
log(2)(25)*log(3)(根号2)*log(5)(9)
log(2)9×log(3)4
log(2)9log(3)4等于
lg(7*2^x+8)>=log(√10) 2^x,求函数f(x)=log(1/2)x*log(1/2)x/4的最小值