log(4)7 * log(49)25 * log(125)64 用换底公式怎样计?
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log(4)7 * log(49)25 * log(125)64 用换底公式怎样计?
log(4)7 * log(49)25 * log(125)64 用换底公式怎样计?
log(4)7 * log(49)25 * log(125)64 用换底公式怎样计?
log4(7) × log49(25) ×log125(64)
=(lg7/lg4)×(lg25/lg49)×(lg64/lg125)
=(lg7/g4)×[(2lg5)/(2lg7)]×[(3lg4)/(3lg5)]
=(lg7/lg4)×(lg5/lg7)×(lg4/lg5)
=1
log(10)(25/9)减log(10)(7/4)减log(10)(1/9)加1/2log(10)(49)
log(4)7 * log(49)25 * log(125)64 用换底公式怎样计?
(log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8)
log(4)25-2log(4)10+log(4)5*log(5)16
化简log(2)3 * log(3)4 * log(4)7 *log(7)16
log
log
log
求等式log(2)3*log(3)4*log(4)5*log(5)6*log(6)7*log(7)m=log(3)9时m的值?
(log以5为底根号2的对数×log以49为底81的对数)÷(log以25为底1/3的对数×log以7为底4的3次方根的对...(log以5为底根号2的对数×log以49为底81的对数)÷(log以25为底1/3的对数×log以7为底4的3次方
2^log(4)(3)加3^log(9)(1/4)加5^log(1/25)(2)
log(2)25×log(3)4×log (5)9等于多少?
计算:(1) log(2)(3)*log(3)(4)*log(4)(5)(2)log(2)(7)*log(√7)(8)
log(8)a+log(4)b^2=5,log(8)b+log(4)a^2=7,求log(2)ab的值
已知log(14)7=a log(14)5=b 用ab表示log(35)70=log(3)4*log(4)8*log(8)m=log(4)2 求m
log(75)10-log(3)10+log(4)10
4^[log(2)3+log(4)8]
log(2)9log(3)4等于