已知a>b>1,log以为底b+log以b为底a=10/3log以a为底b-log以b为底a的值?

已知a>b>1,log以为底b+log以b为底a=10/3log以a为底b-log以b为底a的值? 已知01比较log(a)(1/b),log(a)(b),log(b)(1/b)的大小 已知01.比较log a 1/b,log a b,log b 1/b的大小. a>b>1是log以a为底b 已知log以a为底的X＝1,log以b为底的X＝1/2,log以c为底的X＝1/4,求log以abc为底的X值 已知log以a为底的X＝1,log以b为底的X＝1/2,log以c为底的X＝1/4,求log以abc为底的X值 关于数学对数的换底公式推论的问题已知 log(2)(3) = a,log(3(7)=b,用a,b表示log(42)(56)因为log(2)(3)=a,则1/a=log(3)(2),又∵log(3)(7)=b,∴log(42)(56)=log(3)(56)/log(3)(42)=log(3)(7)+3·log(3)(2)/log(3)(7)+log(3)(2)+1=ab+3/ab+b+1 关于数学对数的换底公式推论的问题已知 log(2)(3) = a,log(3(7)=b,用a,b表示log(42)(56)因为log(2)(3)=a,则1/a=log(3)(2),又∵log(3)(7)=b,∴log(42)(56)=log(3)(56)/log(3)(42)=log(3)(7)+3·log(3)(2)/log(3)(7)+log(3)(2)+1=ab+3/ab+b+1 已知log以18为底9=a,18^b=5,求log以36为底45 已知a＜b＜1,log(a)b+log(b)a=10/3,求log(a)b-log(b)a的值括号为下标, 已知01,则下列不等式中成立的是（ ）A.log(b)(1/b)＜log(a)(b)＜log(a)(1/b)B.log(a)(b)＜log(b)(1/b)＜log(a)(1/b)C.log(a)(b)＜log(a)(1/b)＜log(b)(1/b)D.log(b)(1/b)＜log(a)(1/b)＜log(a)(b) log(a)1/3>log(b)1/3>0,则a,b大小关系(a)以a为底 1≤a≤b≤c,证明log(a)(b)+log(b)(c)+log(c)(a)≤log(b)(a)+log(c)(b)+log(a)(c) 换底公式log(a) (b)=log(n)(b)/log(n)（a）的n可以为任何数吗?且n与a有很么关系? 化简log(1/a)b+log(a)b 在VB中,以10为底的x的常用对数表达式是______.(1分) A、Log(X) B、Log10(X)C、Log(X) / Log(e) D、Log(X) / Log(10) 求证 log(a)^(b)=1/log(b)^(a)求证 log(a)^(b)=1/log(b)^(a) 已知log以18为底9=a,18的次方b=5,则a,b表示log以36为底5=