Question

(log23+log92)(log43+log83)第一个数字是下标,

Answer 1

是不是：

[log3(2)＋log9(2)][log4(3)＋log8(3)]

＝[log3(2)＋1/2log3(2)][1/2log2(3)＋1/3log2(3)]

＝log3( 2•2^(1/2) )×log2( 3^(1/2)•3^(1/3) )

＝[3/2log3(2)]×[5/6log2(3)]

＝5/4