log(a)2

log(a)2 log a 2/3 log a(2/3) log(2)(a)>log(1/2)(-a) 解不等式 log(2,a)/2 怎么化成log(4,a)RT 2^(log(a)(b))*8^(log(a)(b)) x=log a 2 等比数列a+log(2)3,a+log(4)3,a+log(8)3求公比q. log(2)3=a,则log(6)4=（ 对数函数题 log a - log b = 3 log (c/2) 求 a = ______________ 2log(b)x=log(a)x+log(c)x求证,c^2=(ac)^[log(a)b] log(2)5=a,log(2)7=b用ab表示log(35)28 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) 若log(a)(a^2+1) 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