log二25×log三2√2×log五9=?
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log二25×log三2√2×log五9=?log二25×log三2√2×log五9=?log二25×log三2√2×log五9=?全部换底,换成常用对数：log2（25）＝lg25/lg2=2lg5
log二25×log三2√2×log五9=?
log二25×log三2√2×log五9=?
log二25×log三2√2×log五9=?
全部换底,换成常用对数：
log2（25）＝lg25/lg2=2lg5/lg2
log3(2√2)=lg(2√2)/lg3=lg((2^(3/2))/lg3=(3/2)lg2/lg3
log5(9)=lg9/lg5=2lg3/lg5
相乘：lg2、lg5、lg3刚好抵消
结果＝2×（3/2)×2＝6
对数不好写,只好分部表达,抱歉.
=5*√2*2log五3=10√2log五3
log二25×log三2√2×log五9=?
求log₂25×log₃2√2×log(5)9的结果,
(log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8)
log(2)9log(3)4等于
log(2)9×log(3)4
log(27)32 × log(64)27+log(9)2 × log(4)根号27=?log(27)32 × log(64)27+log(9)2 × log(4)根号27=?
log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
2^log(4)(3)加3^log(9)(1/4)加5^log(1/25)(2)
log(2)(25)*log(3)(根号2)*log(5)(9)+_+ 请问为什么错?
log（2）25×log（3）4×log （5）9等于多少?
log(2)(25)×log(3)(1/16)×log(5)(1/9)=?
log(2)1/25乘以log(3)1/8乘以log(5)1/9
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
log(4)25-2log(4)10+log(4)5*log(5)16
化简:(log^3 2+log^9 2)(log^4 3+log^8 3)
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[log(5)8]*[log(32)5]+log(9)8/log(3)2