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log以9为底17的对数

log以9为底2的对数是log9(2)=ln2/ln9=ln2/2ln3如果不懂,请追问,祝学习愉快!

log以36为底45的对数是(b+a)/(2-a).解答过程如下:log18(9)=log9(9)/log9(18)=1/【log9(2)+1】=a log9(2)=1/a-118^b=5 log18(5)=b=log9(5)/log9(18) log9(5)=b【log9(18)】=b/a log36(45)=log9(45)/log9(36)=【log9(5)+1】/【2log9(2)+1】=【b/a+1

log以9为底-3的对数 不存在 真数必须大于0 log以9为底3的对数=1/2 数学辅导团为您解答

(log以9为底8的对数)=(log以8为底9的对数的倒数) 则相乘等于1

log以35为底9的对数=log35 9=1/(log9 35)=1/[log9 (5x7)]=1/(log9 5 + log 9 7)=1/(a+b)【数学的快乐】团队为您解答!祝您学习进步不明白可以追问!满意请点击下面的【选为满意回答】按钮,O(∩_∩)O谢谢

log以9为底(√27)/3=(1/2)*log以3为底 (3的3/4次幂/3)=(1/2)*log以3为底 3的-1/4次幂=(1/2)*(-1/4)*(log以3为底 3)=-1/8

log以9为底3的对数等于0.5; lg3/lg9 =lg3/2lg3 =1/2 =0.5

log以九为底4的对数加log以三为底5的对数=log3 2+log3 5=log3 10

log以18为底9=2lg3/(lg2+2lg3)=2x0.4771/(0.3010+2x0.4771)=1.2552=0.7602

[log9(4)+log3(8)]/log1/3(16)=[lg4/lg9+lg8/lg3]/[lg16/lg1/3]=[2lg2/2lg3+3lg2/lg3]/[4lg2/(-lg3)]=4lg2/[- 4lg2]=-1

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