log5[log4(log3 81)]=0
log5[log4(log3 81)]=0
如果log3〔log4(log5^a)〕=log4〔log3(log5^b)〕=0,则a/b的值为?
计算:log3 4·log4 5·log5 6…log80 81=
log3(4)*log4(5)*log5(6)*...*log80(81)
若log5底(log4底(log3底a) )=0,则a=?
log4(log5 a)=log3(log5 b)=1,求a/b.
2007*log5(1)+log4(27)*log3(4)
已知log2[log4(log3x)]=log3[log5(log2y)]=0,求4更号x-y^1/5
log3^10=a,log5^25=b,求log4^45
化简:1/log3(x)+1/log4(x)+1/log5(x)=
log2(3)*log3(4)*log4(5)*log5(6)*log6(7)*log7(8)=?
(log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)=