赞 poorer_cdy 幼苗
共回答了23个问题采纳率：95.7% 举报
(log4^ 3+log8 ^9)*(log3^ 2+log9 ^16)
=(log2^3/log2^4+log2^9/log2^8)*(log3^ 2+log3^16/log3^9)
=(1/2log2^3+1/3log2^9)*(log3^2+1/2log3^16)
=(1/2log2^3+2/3log2^3)*(log3^2+2log3^2)
=log2^3 *3log3^2
=3*log2^3 *log3^2
=3
=(log2^3/log2^4+log2^9/log2^8)*(log3^ 2+log3^16/log3^9)
=(1/2log2^3+1/3log2^9)*(log3^2+1/2log3^16)
=(1/2log2^3+2/3log2^3)*(log3^2+2log3^2)
=log2^3 *3log3^2
=3*log2^3 *log3^2
=3
1年前
9
可能相似的问题
-
求：log4√3(81) 和 log3√5^4(625)的值!要过程
1年前10个回答
-
(log4 3+log8 3)*(log3 2+log4 2)
1年前1个回答
-
[log4(3)+log8(3)]*log3(2)答案是1/3么
1年前1个回答