logX=3log a -log b,X等於多少
解方程logx^2 -log(2x+3)=0
若logx表示log10x(10为底数),且log(5x^2)=a,则log(4/x^2)=
logx-logy=log(x-y),用y表示x,
2log(b)x=log(a)x+log(c)x
怎么证明log^2X=(logx)^2
logx(5)-2log根号5(x)>3
一道log数学题log3 X=9logx 3求x
logx与 log|x|有什么区别
log^ 2X是否等于(logX)^2?
log(ab)=log(a)+ log(b)吗
对数函数题 log a - log b = 3 log (c/2) 求 a = ______________
log a b*log b c=log b b*log a c成立吗