(1/log2 10) + (1/log5 10) =lg2 + lg5
(1/log2 10) + (1/log5 10) =lg2 + lg5
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
计算:(lg2)2+3lg5+lg5(1+lg2)+lg8+log2(5)log5(4)
求值lg2/(log50 10) +lg5/(log5 10)
求下列各式的值 1)log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4)log3
(log5)²+lg2*lg5+2的(1+1/2log2为底5的对数)次方 的值
(Log2)的三次方+(Log5)的三次方+3*lg2*lg5=?
高一数学设a=(lg2)²+(lg5)²+lg4lg5+2log5 10+log5 0.25 b=(
为什么log2(10)=1/lg2
lg5*(1+lg2)+(lg2)^2=
为什么lg5+lg2=1?
lg2(1+lg5)+(lg5)^2