计算 log2 的9次方`log3 的8次方
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logx/log3=(-1)/[(log3)/log2]logx=-log2=log(1/2)x=1/2原式=1/2*(1-1/2^n)/(1-1/2)=1-1/2^n
(log34+log38)(log23+log29)+(log3根号2)(log97)/[(log1/37)(log三次根号48)]=(5lg32)(3lg32)+[9(lg23)(lg37)/4]/
log26-log23=log2(6÷3)=log22=1,lg5+lg2=lg(5×2)=lg10=1,log53+log51/3=log5(3×1/3)=log51=0,log35-log315=
6那不叫次方叫以几为底几的对数再问:哦再问:告诉我答案就行再问:快快快再答:6
1、log2(4*5)-(2/2)log2(5)=log2(4)+log2(5)-log2(5)=2;2、换底公式:(lg3/lg2)*(lg5/lg2)*(lg5/lg3)=1;3、log2(5-l
log2^(1/25)·log3^(1/8)·log5^(1/9)=log2^[5^(-2)]·log3^[2^(-3)]·log5^[3^(-2)]=(-2)·(-3)·(-2)·log2^5·lo
=lg9/lg2×lg4/lg3=2lg3/lg2×2lg2/lg3=4再问:确定吗?急需再答:嗯再问:有人等于2呀!再答:不信拉倒,再见再问:嗯谢谢了
(log以3为底2的对数)的平方
lg2/lg3=lg3^x/lg2(lg2)^2=xlg3*lg3=x(lg3)^2x=(lg2)^2/(lg3)^2x=(1og32)^2
∵log(log(logx))=0所以log(logx)=1则logx=3∴X=8X-=根号2分之4如果我的回答对你有帮助的话,请采纳我的答案,谢谢^_^
注明一下loga的n次方b的m次方=(m/n)logablogab=lgb/lga原式=(log23+log89)(log34+log98+log32)=[log23+(2/3)log23][2log
解题思路:考查换底公式的应用解题过程:最终答案:略
log2[25]*log3[1/16]*log5[1/9]=2log2[5]*(-4)log3[2]*(-2)log5[3]=16*[(lg5/lg2)*(lg2/lg3)*(lg3/lg5)]=16
(log3^4+log5^2)(log2^9+log2^根号3)=(lg4/lg3+lg2/lg5)(lg9/lg2+lg根号3/lg2)=(2lg2*lg5+lg2*lg3)/lg3*lg5*(lg
等于9再问:过程再答:log29=3*log23log38=3*log32log23*log32=1
log2(3)×log3(4)+8^(-2/3)=(lg3/lg2)×(lg4/lg3)+(2^3)^(-2/3)=(lg4/lg2)+2^[3×(-2/3)]=2lg2/lg2+2^(-2)=2+1
log32等于log23的x次方x=-1因为log32与log23互为倒数.
9的2分之一次方-log3的5次方=√9/25=3/25【【不清楚,再问;满意,祝你好运开☆!】】
首先知道log(a^n)(b^m)=m/n*[log(a)(b)]原式=[(log23)+1/3*(log29)][(log34)+1/2*(log28+(log32)]=[(log23)+2/3*(