若| log a 1/4 |=log a 1/4 ,| log b a |=-log b a 则 a b满足什么条件0＜a＜1 b＞1log旁边的a在下面

若| log a 1/4 |=log a 1/4 ,| log b a |=-log b a 则 a b满足什么条件0＜a＜1 b＞1log旁边的a在下面 可以说log a x +log a y=log a 27-1/ 若a>0,b>0,a*b>1,log(1/2)[a]=ln2,则log(a)[b]与log(1/2)[a]的关系是：（）?(A)log(a)b< log(1/2)[a](B)log(a)b= log(1/2)[a](C)log(a)b>log(1/2)[a](D)log(a)b与log(1/2)[a] 无法比较大小我做到一半就做不下去了：a=(1/2)^(ln2)log 请问为什么1/log(a)k=log(k)a? log(a)M+log(a)N=? 对数的运算问题-log a 1/x=-(log a 1-log a x)=log a x 求证 log(a)^(b)=1/log(b)^(a)求证 log(a)^(b)=1/log(b)^(a) 1、若lg2=a,lg3=b,则lg√15=?（用a、b表达）2、若log(15)(5)=m,则log(15)(3)=(用m表示)3、log(2)(3)*log(3)(4)*log(4)(5)*log(5)(6)*log(6)(7)*log(7)(8）=?4、设log(3)(2)=log(2)(3^x),x=?这个对数函数我学的很不好,所以希望过 log(2)3=a,则log(6)4=（ 若f(x)=log a (1-x),g(x)=log a (1+x) 0 设a=1/log(4)3+1/log(7)3,求证a属于(3,4) 若log(2)3=(1-a)/a则log(3)12RT求详解 已知log(a)x=1,log(b)x=2,log(c)x=4,则log(abc)x=? 已知log a x=2,log b x=1,log c x=4,求log abc x 的值 log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值 证明对数运算法则（1）log(a)(MN)=log(a)(M)+log(a)(N); 　　（2）log(a)(M/N)=log(a)(M)-log(a)(N);（1）log(a)(MN)=log(a)(M)+log(a)(N); 　　（2）log(a)(M/N)=log(a)(M)-log(a)(N); 　　（3）log(a)(M^n)=nlog(a)(M) （n∈R） 若log a(2a+1) 若log(a)(a^2+1)