log的计算log2为底 20-log4为底 25
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log的计算log2为底20-log4为底25log的计算log2为底20-log4为底25log的计算log2为底20-log4为底25=lg20/lg2-lg25/lg4=lg20/lg2-lg5
log的计算log2为底 20-log4为底 25
log的计算
log2为底 20-log4为底 25
log的计算log2为底 20-log4为底 25
=lg20/lg2-lg25/lg4
=lg20/lg2-lg5²/lg2²
=lg20/lg2-2lg5/2lg2
=lg20/lg2-lg5/lg2
=(lg20-lg5)/lg2
=lg(20/5)/lg2
=lg4/lg2
=lg2²/lg2
=2lg2/lg2
=2
log2为底 20-log4为底 25
log(2)20-log(4)25
= lg20/lg2-lg25/lg4
= lg20/lg2-2lg5/2lg2
= lg20/lg2-lg5/lg2
= (lg20-lg5)/lg2
= (lg20/5)/lg2
=lg4/lg2
=2lg2/lg2
=2
log的计算log2为底 20-log4为底 25
log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2[log2(32)-log2(3÷4)+log2log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2【log2(32)-log2(3÷4)+log2(6)】=?lgx+lg(x+15)=2 ..X
利用换底公式计算下面题目?log2 5 x log5 4 log2 3 x log3 4 x log4 5 x log5 6 x log6 7 x log7 8 (log后面数字为底数小一点)
利用对数的换底公式,计算.log2 5(不是25,以下同) ×log 5 4 =2?log2 3×log3 4×log4 5×log5 6×log6 7×log7 8=3?
log (log2)^2 - (log4)(log20) + (log20)^2
log2 20-log4 25的答案是
[log3(4)+log根下3(2)][log2(9)+log4(根3)]题目是(log以3为底4的对数+log以根3为底2的对数)(log以2为底9的对数+log以4为底根3的对数)
log2 20-log4 25
比较log2 0.4,log3 0.4,log4 0.4的大小比较log2为底 0.4,log3为底 0.4,log4为底 0.4的大小
log2为底三分之二的对数+log2为底6的对数+log4为底8的对数
(log2^5+log4^125)(log3^2)/(log(根号3)^5 要具体的过程,
有关log的数学题①log2(2X+3)=0②log5(X)-1/3log5(8)=0③log2(X)+log4(X)=6可以的话,我需要计算过程...
log4 x =log以2为底2x的对数吗?
(log2 5+log4 125)log3 2/ log根号3 5
计算:log2(8)×log4(5)×log5(16)
log2为底3的对数,log4为底2的对数,log2为底5的对数,log0.5为底3的对数大小关系为?
(log2底5+log4底0.2)(log4底2+log25底0.4)的值是
log25^2/1*log4^5-log1/3^3-log2^4+5^log根号5^2要过程,答案为11分之4log25^2/1*log4^5-log1/3^3-log2^4+5^log根号5^2过程啊,