若a>0,a^(2/3)=4/9,则log(1/4)a=?

log(2)3=a,则log(6)4=（ 27-1/ 若a>0,b>0,a*b>1,log(1/2)[a]=ln2,则log(a)[b]与log(1/2)[a]的 解方程[log(a)(x-1)]-[log(a)(2x-3)]=log(a)(1/3-x),(a＞0,且a≠1). 若log(根号3)a= -2log(3)7,则a=? 设a=1/log(4)3+1/log(7)3,求证a属于(3,4) 设a>b>1,log(a)b+log(b)a=10/3,则log(a)b-log(b)a= 1.若方程(lgx)^2-2lgx-2=0有两个根A,B.则log(A)B+log(B)A=?2.1） 0.125*4^ 【高二数学】设a>0且a≠1,函数f(x)=log a (x²-2x+3)有最小值,则不等式log a (x- 已知0＜a＜1,x=log a 根号2＋log a 根号3 已知a^2=m,a^3=n,a＞0且a≠1,求2log a m+log a n log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值 设a＞1,若对于x∈[a,2a],都有y∈[a,a^2]满足方程log以a为底的x+log以a为底的y=3,则a的取值范