log以3为底2的对数+log以9为底2的对数的和,乘以,log以4为底3的对数+log 以8为底3的对数的和,的积前面两个数的和乘以后面两个数的和,

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/16 09:29:23
log以3为底2的对数+log以9为底2的对数的和,乘以,log以4为底3的对数+log以8为底3的对数的和,的积前面两个数的和乘以后面两个数的和,log以3为底2的对数+log以9为底2的对数的和,

log以3为底2的对数+log以9为底2的对数的和,乘以,log以4为底3的对数+log 以8为底3的对数的和,的积前面两个数的和乘以后面两个数的和,
log以3为底2的对数+log以9为底2的对数的和,乘以,log以4为底3的对数+log 以8为底3的对数的和,的积
前面两个数的和乘以后面两个数的和,

log以3为底2的对数+log以9为底2的对数的和,乘以,log以4为底3的对数+log 以8为底3的对数的和,的积前面两个数的和乘以后面两个数的和,
楼上写错了
[log(3,2)+log(9,2)]*[log(4,3)+log(8.3)]
=[log(3,2)+1/2log(3,2)]*[1/2log(2,3)+1/3log(2,3)]
=3/2log(3,2)*5/6log(2,3)
=3/2*5/6*1
=15/12
=5/4

[log(3,2)+log(9,2)]*[log(4,3)+log(8.3)]
=[log(3,2)+1/3log(3,2)]*[2log(2,3)+3log(2,3)]
=4/3log(3,2)*5log(2,3)
=4/3*5*1
=20/32log(2,3)=log(4,3不对吧额。。。写错了 [log(3,2)+log(9,2)]*[log(4,3)+lo...

全部展开

[log(3,2)+log(9,2)]*[log(4,3)+log(8.3)]
=[log(3,2)+1/3log(3,2)]*[2log(2,3)+3log(2,3)]
=4/3log(3,2)*5log(2,3)
=4/3*5*1
=20/3

收起