2道数学计算题求解!
展开全部
log2 5 *log5 2 + log2 5 * log25 0.5 + log4 0.2 * log5 2 + log4 0.2 * log25 0.5=1+ lg5lg0.5/(2lg5lg2)+lg0.2lg2/(2lg2lg5)+lg0.2lg0.5/(4lg2lg5) =1-1/2-1/2+1/4
=1/4
2,
2LGR2L
2lg5 +lg2 (2lg5+lg2)+(lg2)^2
=2lg5 +2lg2lg5 +2(lg2)^2
=2lg5+2lg2(lg5+lg2)
=2lg5+2lg2
=2(lg2+lg5)
=2
=1/4
2,
2LGR2L
2lg5 +lg2 (2lg5+lg2)+(lg2)^2
=2lg5 +2lg2lg5 +2(lg2)^2
=2lg5+2lg2(lg5+lg2)
=2lg5+2lg2
=2(lg2+lg5)
=2
本回答被网友采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询