(log2 5+log4 1/5)(log5 2+log25 1/2)
=(log2 5-log4 5)(log5 2-log25 2)
=(lg5/lg2-lg5/lg4)(lg2/lg5-lg2/lg25)
=1/2lg5/lg2*1/2lg2/lg5
=1/4
求值(log2 5+log4 1/5)(log5 2+log25 1/2)
2个回答
相关问题
-
(log25 2+log5 1/8)(log2 5+log4 根5)求值
-
求：（log2 125＋log4 25＋log8 5）（log125 8＋log25 4＋log5 2）；
-
求(log2 5+log4 0.2)(log5 2+log25 0.5)
-
高中数学对数计算求值（log2 125+log4 25+log8 5）*（log125 8+log25 4+log5 2
-
(log(2)125+log(2)25+log(8)5)*(log(125)2+log(25)4+log(5)8)
-
[log2 (125) +log4(25)+log8(5)][log125(8)+log25(4)+log5(2)
-
求值：3^(log3 (25) )+(-C(5,4)^(log2 1)+16^(log4(2sin(π/2))=
-
log7（1/8) * (log8 （25）+log2 （5）)* log5 （49） 怎么求
-
已知log2[log1/2(log2x)]=log3[log1/3(log3y)]=log5[log1/5(log5z)
-
log4^25-2log4^10+log2^9×log3^根号5×log5^2