log3+27

祁枫品5078化简下列各式,其中x是正数. 1.logx2 + logx5 / logx — logx4 2. log3x2 / log27x5 -
乌琼魏17657718992 ______ .logx2 + logx5 / logx -logx4=2logx + 5logx / logx -4logx=-7/3 log3x2 / log27x5=(log3+logx2 )/( log27+ logx5)==(log3+2logx )/( 3log3+ 5logx)

祁枫品5078log以3为底的(27的4次方根)为多少? -
乌琼魏17657718992 ______ log以3为底的(27的4次方根)=12

祁枫品5078log3底27的根4次方/3怎么化简成log3底3的负四分之一次方? -
乌琼魏17657718992 ______ log3 ((27)^(1/4)/3)=log3 ((27/(3^4))^(1/4))=log3 ((27/81))^(1/4))=log3 ((1/3^(1/4))=log3 (1/(3^(1/4)))=log3 (3^(-(1/4)))

祁枫品5078log3(27开4次方根/3) -
乌琼魏17657718992 ______ log3(27开4次方/3)=log3(3^(3/4)/3)=3/4

祁枫品5078若3的x次方=2,3的y次方=4,求9的2x - y+27的x - y的值 -
乌琼魏17657718992 ______ 若3的X次方=2,3的Y次方=4,那么:9的2X-Y次方+27的XY次方=3的4x-2y次幂 + 3的3xy次幂=(3的x次幂)的4次幂÷ (3的y次幂)² + (3的x次幂·3的y次幂)³=2的4次幂÷ 4² + (2*4)³=1+ 512=513

祁枫品5078log3(27开四次方/3)xlog5[4^1/2log210 - (3根号3)2/3 - 7log(2)3] -
乌琼魏17657718992 ______ 题目应是 log3(27开四次方/3)xlog5[4^1/2log210-(3根号3)2/3-7^log7 2]=log3(3^(1/4))xlog5[2^log210-(3^(3/2))^2/3-2]=1/4xlog5[10-3-2]=1/4xlog5 5=1/4

祁枫品5078log3 √27+lg25+lg4+7的log7 2幂+( - 9.8)º= 13/2 知道答案,求详细解!由其是7的log7 2幂.log3 √27+lg25+lg4+7的log7 2幂+( - 9.8)º= 13/2 知道答案,... -
乌琼魏17657718992 ______[答案] 7的log7 2幂,这个是对数恒等式 =2 log3 √27=3/2 lg25+lg4=lg100=2 7的log7 2幂=2 (-9.8)º=1

祁枫品5078log3(log3 27)=?3都是底数 -
乌琼魏17657718992 ______[答案] log3(log3 27) =log3(log3 3^3) =log3(3log3 3) =log3 (3*1) =log3 3 =1

祁枫品5078已知log23=a,log37=b,试用a,b表示log1456 -
乌琼魏17657718992 ______ log37=log27/log23 所以log27=log23log37 公式logab=logcb/logca

祁枫品5078以2为底3的对数加上以27为底125的对数 -
乌琼魏17657718992 ______[答案] 以2为底3的对数加上以27为底125的对数 log2(3)+log27(125) =log2(3)+log3(5); 很高兴为您解答,skyhunter002为您答疑解惑 如果本题有什么不明白可以追问,