2*[log2(底)8/3(真)/log2(底)4(真)]怎么算

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2*[log2(底)8/3(真)/log2(底)4(真)]怎么算2*[log2(底)8/3(真)/log2(底)4(真)]怎么算2*[log2(底)8/3(真)/log2(底)4(真)]怎么算刚不在,

2*[log2(底)8/3(真)/log2(底)4(真)]怎么算
2*[log2(底)8/3(真)/log2(底)4(真)]怎么算

2*[log2(底)8/3(真)/log2(底)4(真)]怎么算
刚不在,很抱歉没能及时解决你的问题,还望见谅
不知你有没有学过换底公式,这是对数中较重要的公式.



2*log2(8/3)/log2(4)
=2*log2(8/3)/log2(2^2)
=2*log2(8/3)/2log2(2)
=log2(8/3)/log2(2)
=log2(8/3)
=log2(8)-log2(3)
=log2(2^3)-log2(3)
=3-log2(3)
~~~~~~~~~~~~~~~~~~~~~...

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2*log2(8/3)/log2(4)
=2*log2(8/3)/log2(2^2)
=2*log2(8/3)/2log2(2)
=log2(8/3)/log2(2)
=log2(8/3)
=log2(8)-log2(3)
=log2(2^3)-log2(3)
=3-log2(3)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
祝你学习进步,更上一层楼!
不明白请及时追问,满意敬请采纳,O(∩_∩)O谢谢~~

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2*[log2(底)8/3(真)/log2(底)4(真)]怎么算 log数学题,求救!高中水平就可以!log(x+8)-log2=log(3x+2)求x. 4(log23)÷log2(1/8)的值log以2为底3的对数是4的指数 (log2 5+log4 125)log3 2/ log根号3 5 解方程 log2(x+14)+log(x+2)=log(x+6)+3 y=log2(sinx+3)的值域log后的2在log下面 1.已知log5=m log2=n 求用m,n表示 log1/10 2.若log【2】(log【8】m) ,求(log【2】m)的平方【底】【】内为底2.是若log【2】(log【8】m) =log【8】(log【2】m),求(log【2】m)的平方 log根号三为底2为真等于a,则log 12为底 3为真等于 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? (log3 4+log3 8)(log2 3+log2 9)+(log3 根号2)(log9 7)/(log1/3 7)(log三次根号4 8) (log2 9)/(log2 8) = 2/3(log2 3) f(x)=[log2(x/8)][log(1/2)(4/x)]值域令log(1/2)x=t∈[-3,1/2] log (log2)^2 - (log4)(log20) + (log20)^2 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 求f(x)=log2(x/2)·log2(x/4),当x∈[2,8]时的最小值和最大值.上题读做log以2为底,x/2的对数,乘以log以2为求f(x)=log2(x/2)·log2(x/4),当x∈[2,8]时的最小值和最大值.上题读做log以2为底,x/2的对数,乘以log以2为 为了得到函数f(x)=log2( x)的图像,只需将函数f(x)=log2(x/8)的图像如何平移f(x)=log2(x)是指log以2为底,x的对数 方程log2(x+2)=x2;的实数解的个数是log2(x+2)=x²的实数解个数是若log以3为底的真数7*log以2为底的真数9*log以49为底的真数m=log以4为底的真数½ 则m=? log2(3)*log3(4)*log4(5)*.log(k+1)(k+2)=log2(k+2) 怎么证