log9(1 3)n等于
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2^(log4^12)-3^(log9^27)+5^(log25^1/3)=2^(log2(根号12))-3^(log3(根号27))+5^(log5(根号1/3)=根号12-根号27+根号(1/3)
log2√2+log927+4^log413=log22^(1/2)+log(3^2)(3^3)+13=1/2+3/2+13=15
log(2^n)(3^n)=n/nlog23=log23log(9)8^(1/n)=1/n*log98原式=(log23+log23+...+log23)*1/n*log98=nlog23*1/n*l
只要使用公式log(a^n底)(b^m))=m/n*logab(log23+log49.+log827+.+log(2^n底)(3^n)这些相加的项都是相等的还有就是log23=1/log32
log35】9=1/log9]35log9]35=log9]7+log9]5log9]7=2log3]7=2n所以log35】9=1/(2n+m)
=3/2+1/2=21、log48=log2²2³=3/2log1/93=log3^(-2)3=-1/22、换底公式log48=lg8/lg4=3lg2/(2lg2)=3/2log
log9(45)-log9(5)=log9(45/5)=log9(9)=1
log2^n(3^n)=log2(3)log2(3)+log4(9)+……+log2^n(3^n)=nlog2(3)log9(n次根号8)=1/nlog9(8)=1/n*3/2*log3(2)(log
log49=2lg3/2lg2=lg3/lg2=log23log23+log49+log827+...+log2^n3^n=nlog23=nlg3/lg2log932的N次方根(log23+log49
亲,若满意该答案请采纳吧!再问:再问:再问:请问一下这道题怎么写方便的话回答一下再问:第十题
log4(9)=2*1/2log2(3)=log2(3)log3(4)=2log3(2)log9(2)=1/2log3(2)[log2(3)+log4(9)][log3(4)+log9(2)]=2lo
1/2+3/2+13=15
log2^根号下2+log9^27+4^(log4^13)=1/2+3/2+13=15
log920=lg20/lg9=lg(2*10)-lg3^2=lg2+lg10-2lg3=a+1-2
n(n+1)(n+2)=(n平方+n)(n+2)=n^3+3n^2+2n再答:望采纳!再答:不懂可以问我再问:啊咧,可以加你QQ么再问:3乘以27乘以9=3的x次方,则x等于多少?
1000
图象过点(9,2)所以2=loga(9)a^2=9a=3所以y=f(x)=log3(x)所以3^y=x所以f-1(x)=3^x所以f-1(log92)=3^(log92)=(9^1/2)^(log92
因为loga(b)=lgb/lga所以原式可化为lg10/lg5=log5(10)
建议把原题拍个图片发上来吧,你的描述和符号真的看不懂……再问:就是P下面的是n-5,上面是7再答:另外两个选项是什么?再问:另外两个肯定不对。。就这两个有争议