计算log以2为底25乘以log以3为底2√2乘以log以5为底9的结果为

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计算log以2为底25乘以log以3为底2√2乘以log以5为底9的结果为
A.3 B.4 c.5 D.6

log以2为底25乘以log以3为底2√2乘以log以5为底9
=2log2 5×(3/2)log3 2×2log5 3
=6log2 5×log3 2×(log2 3/log2 5)
=6(log2 5×1/log5 2)×(log3 2×log2 3)
=6
选D

计算log以2为底25乘以log以3为底2√2乘以log以5为底9的结果为 log以2为底25的对数乘以log以3为底4的对数乘以log以5为底9的对数 log以2为底的9乘以log以3为底的8等于多少 9乘以log以3为底5的对数 log以3为底2的对数+log以9为底2的对数的和,乘以,log以4为底3的对数+log 以8为底3的对数的和,的积 ﹙log以2为底5的对数+log以4为底125的对数﹚乘以﹙log以3为底2的对数/log以根号3为底的5的对数﹚ log以2为底3的对数乘以log以81为底61的对数得多少? 计算(log以2为底的3+log以4为底的9+log以8为底的7+……+log以2^n为底的3^n)*log以9为底^n log以2为底6的对数乘以log以3为底6的对数-(log以2为底3的对数+log以3为底2的对数) 计算：（log以4为底3的对数+log以8为底3的对数）（log以3为底2的对数+log以9为底2的对数）- log以½ log以4为底(x+12)的对数乘以log以x为底2的对数等于计算log以8为底16+log以2为底3*log以3为底2=?