(log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)求值

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(log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)求值(log以2为底125+log以4为底25+log以8为底5)(log以5

(log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)求值
(log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)求值

(log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)求值
(log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)
=(lg125/lg2+lg25/lg4+lg5/lg8)(lg2/lg5+lg4/lg25+lg8/lg125)
=(3lg5/lg2+lg5/lg2+1/3lg5/lg2)(lg2/lg5+lg2/lg5+lg2/lg5)
=13/3lg5/lg2*3lg2/lg5
=13/3*3
=13

log以4为底3×log以9为底2+log以2为底^4√64 求值log以9为底32×log以64为底27+log以9为底2×log以4为底√27 求值 为什么 2log以4为底 等于log以2为底. ﹙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) 12 log(以2为底)X log以a为底2/3 (log以2为底125+log以4为底25+log以8为底5)(log以5为底2+log25为底4+log以125为底8)求值 lg5的平方+lg2乘lg50 和里面的一题第一:lg5的平方+lg2乘lg50第二:(log以2为底125+log以4为底25+log以8为底5) 乘(log以125为底8+log以25为底4+log以5为底2) (log以4为底3+log以8为底3)×(log以3为底5+log以9为底5)×(log以5为底2+log以25为底2)求值 log以4为底3为真数×log以9为底2的对数×log以1/2为底4根号32求值 log以2为底5为真数与log以5为底8 log以2为底的(log以3为底的(log以4为底的x))=log以3为底的(log以4为底的(log以2为底的y))=log以4为底(log以2为底的(log以3为底的z))=0,则x+y+z等于?这个我写的比较多,希望会的人不要觉的麻烦,. 1/log以5为底7+1/log以3为底7+1/log以2为底7 求值 log以5为底35+2log以为底根号二-log以5为底五十分之一-log以五为底14 求log以2为底cosπ/9的对数+log以2为底cos2π/9+log以2为底4π/9= log以2为底4+log以9为底的27-2log以2为底的3 解方程:log以2为底的x+2*log以4为底的x+log以8为底的x=7 log以4为底8的对数-log以9分之1为底3的对数-log以根号2为底4的对数