log3^7乘以log2^9乘以log49^2=
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log3^7乘以log2^9乘以log49^2=log3^7乘以log2^9乘以log49^2=log3^7乘以log2^9乘以log49^2=换底得log3^7=lg7/lg3log2^9=lg9/
log3^7乘以log2^9乘以log49^2=
log3^7乘以log2^9乘以log49^2=
log3^7乘以log2^9乘以log49^2=
换底得log3^7=lg7/lg3
log2^9=lg9/lg2=2lg3/lg2
log49^2=lg2/lg49=lg2/2lg7
原式=lg7/lg3*2lg3/lg2*lg2/2lg7
约了之后=1
log3^7乘以log2^9乘以log49^2=
log3^7乘以log2^9乘以log49^2=
log2 9乘以log3 4等于多少
、计算:log2的9次方乘以log3的8次方
log2^3乘以log3^2等于多少?
log3 7·log2 9·log49 a=log4 1/2,则a=
若log3(7)*log2(9)*log49(a)=log4(1/2),则a=?
log2(3)乘以 log3(4) 要过程
log3/2乘以5log2/3怎么化简?
log4^25-2log4^10+log2^9×log3^根号5×log5^2
若log3(7)·log2(9)·log49(a)=log4(1/2),则a的值等于
log3的2次乘以log4的x次=1 求x
2^(2+log2 5)—2^(log2 3乘以log3 5)的值为
已知log3的四次方乘以log4的八次方乘以log8的m次方=log4的16次方,求m,
(1)log4 27乘以log25 8乘以log9 5 (2)(log4 3+log8 3)(log3 2+log9 2)、
log2 20---log2 5+log3 4 * log4 3 等于什么
log2(20)-log2(5)+2log3(2)×log4(3)
1、拜求这道题的值啊:1g8+1g125-1g2-1g5/1g根号下101g0.1等于,2、log2的25log3的81log5的9等于?3.(log4的3+log8的3)乘以1g2/1g3等于?4.1g8+31g5等于?