lg2=0.3010 则lg2.5=?
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lg2=0.3010 则lg2.5=?
lg2=0.3010 则lg2.5=?
lg2=0.3010 则lg2.5=?
告诉你
lg2.5=lg(10/2/2)
=lg10-lg2-lg2
=1-0.3010*2
=0.3980
好了!
lg2.5
=lg(10÷2÷2)
=lg10-lg2-lg2
=10-0.3010-0.3010
=0.3980
公式:lg(ab)=lga+lgb;lg(a/b)=lga-lgb
lg2.5=lg(5\2)=lg5-lg2=lg(10\2)-lg2=lg10-2lg2=1-2*0.3010=0.3980
lg2.5=lg(10/2/2)=lg10-lg2-lg2=1-0.3010*2=0.3980
lg2=0.3010 则lg2.5=?
lg2*lg2+lg5-lg2=?
lg2=0.3010那lg2.5等于多少
取lg2=0.3010,怎么求lg2.
lg^2 5+lg2*lg5+lg2=?
lg25+lg2*lg50+lg2*lg2=?
lg2*lg2+lg50*lg2+lg25=?xiexie!
化简:lg2+lg2²+lg2³+...+lg2¹º=?
lg2+lg2^2+lg2^3+……+lg2^10=
lg2*lg2+lg20*lg5=?
(lg2)^3=3lg2 ?
已知lg2=0.3010,求log2*5
5^log25(lg2的平方+lg2.5)=?
为什么5^[log 5 (1-lg2)]=1-lg2
lg2^5+2lg2xlg5+2(lg2)^2=
3lg2*5lg3=?
lg2到底等于什么?lg2=0.3010 也有人说lg2=2 到底等于什么?
求值 :lg5²+lg2*lg50+(lg2)²答案写;2lg5+lg2*lg(5*10)+(lg2)²①=2lg5+lg2*lg5+lg2+(lg2)² ②=2lg5+lg2*(lg5+lg2)+lg2③ .第 ②步怎么得到的怎么就变成了lg2*lg5+lg2?