log4^8-log9^1 27 lg25 lg2

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log4^27×log(8)25×log9^5

原式=log427*log825*log95=lg27/lg4*lg25/lg8*lg5/lg9=3lg3/2lg2*2lg5/3lg2*lg5/2log3=1/2*(lg5/lg2)^2=1/2*(

计算log9(根号2)*[log4(3)+log8(3)]

=lg√2/lg9(lg3/lg4+lg3/lg8)=lg2/4lg3/(lg3/2lg2+lg3/3lg2)=1/4(1/2+1/3)=5/24

log4(底数)8(真数)—log9分之1(底数)3(真数)等于多少

=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

计算:(log4 3+log8 3)×log9 √2=?

公式loga²(b)=1/2loga(b)   loga(b)×logb(a)=1

[log4(3)/log4(8)][log3(2)log9(2)]

[log4(3)+log8(3)]×[log3(2)+log9(2)]=[1/2log2(3)+1/3log2(3)]×[log3(2)+1/2log3(2)]=[5/6log2(3)]×[3/2lo

log9^8×log4^27=____.

log9^8×log4^27=lg8/lg9×lg27/lg4=3lg2/2lg3×3lg3/2lg2=3/2×3/2=9/4

[log2(3)+log4(9)][log3(4)+log9(2)]等于

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

化简(log4(3)+log8(3))(log3(2)+log9(2))

4^a=3公式1过程两边取lg()的对数:lg4^a=lg3a=lg3/lg4(公式1)公式2过程两边取log4()的对数:log4(4^a)=log4(3),又因为log4(4^a)=a*log4(

(log4^3+log8^3)(log3^2+log9^2)

原式=(1/2*log2^3+1/3*log2^3)(log3^2+1/2*log3^2)=(5/6*log2^3)*(3/2*log3^2)={5/6*(lg3)/(lg2)}*{3/2*(lg2/

求值(log4(3)+log8(3))×(log3(2)+log9(2))

(log4(3)+log8(3))×(log3(2)+log9(2))log4(3)这里的(3)立方?

求值:(log4^ 3+log8 ^9)*(log3^ 2+log9 ^16)

(log4^3+log8^9)*(log3^2+log9^16)=(log2^3/log2^4+log2^9/log2^8)*(log3^2+log3^16/log3^9)=(1/2log2^3+1/

1.log2 3*log3 4*log4 5*log5 2 2.(log4 3+log8 3)8(log3 2+log9

1、log23*log34*log45*log52=lg2/lg3xlg3/lg4xlg4/lg5xlg5/lg2(换底公式)=1(约分)2.(log43+log83)*(log32+log92)中间

log2^根号下2+log9^27+4^(log4^13)

log2^根号下2+log9^27+4^(log4^13)=1/2+3/2+13=15

计算:(1/4)^log4^1/3-lg25-lg4-log9^27

(1/4)^log4^1/3-lg25-lg4-log9^27(1/4)^log4^(3)^(-1)-(lg25+lg4)-(3/2)log3^3把(1/4)^log4^(3)^(-1)中的(-1)次

(1)log4 27乘以log25 8乘以log9 5 (2)(log4 3+log8 3)(log3 2+log9 2

⑴利用换底公式,将所有的式子换成以10为底的对数:原式=lg27/lg4×lg8/lg25×lg5/lg9=lg3³/lg2²×lg2³/lg5²×lg5/lg

求值(log3(2)+log9(2))*(log4(3)+log8(3))

原式=(log3(2)+1/2log3(2))*(2log2(3)+3log2(3))=3/2*5*log2(3)*log3(2)=15/2

(log3^2 + log9^4)×(log4^3 + log8^3)

首先解释一下ln4=2ln2底数也有类似规律log4^3=1/2(log2^3)所以(log3^2+log9^4)×(log4^3+log8^3)=(log3^2+log3^2)×((1/2)log2

(log9(8))*(log4(3根号3))?

因为(log9(8))=(3/2)(ln2/ln3)(log4(3根号3))=(1/3)(ln3/ln2)所以(log9(8))*(log4(3根号3))=1/2再问:不对哦,这的是错误答案·····