(x)=log2(4^x-2^x),当x属于[1,2]时f(x)的最大值.函数是以2为底4^x-2^x的对数
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已知函数f(x)=log2^ ( x/4 ) ×log2^ (2x) (1)解不等式f(x)>0;(2)当x∈【1,4】时,求f(x)的值域f(x)=log2(2x)×log2(x/4)=[(log2 2)+(log2 x)] ×[(log2 x) -(log2 4)]=[1+(log2 x)] ×[(log2 x) -2]=(log2 x)² - (log2 x) -2
化简:(log2(x/4))*(log2(x/2))
log2^(x^log2^x)=?
x^(log2 x)=32x^4 log2 x 2在下面x^(log2 x)=32x^4 log2 x 2在下面
log2 4+log2 (x+2)怎么算?log2 4+log2 (x+2)=log2 (4x+8)
log2(-x)=x+
|2x-log2^x|
log2 (x + 3) + log2(x + 2) = 1log2 (x + 3) + log2(x + 2) = 1
已知f(x)是奇函数,且f(2-x)=f(x),当x∈[2,3]时,f(x)=log2(x-1),则当x∈[1,2]时,f(x)=____.A.-log2(4-x) B.log2(4-x) C.-log2(3-x) D.log2(3-x)注:对数都是以2为底的.
log2(2x)*log2(x)=2 x=?
f(x)=log2(x/8)*log2(2/x)
f(x)=(log2 X/4)*(log2 X/2),x∈[1/2,4]的值域
log2(4^x+4)=x+log2(2^x+1-3)log2(4^x+4)=x+log2[2^(x+1)-3]
f(x)=log2(4x-x 2)定义域
log4(log2^x)=log2(log4^x)求log2^x
(x)=log2(4^x-2^x),当x属于[1,2]时f(x)的最大值.函数是以2为底4^x-2^x的对数
log2 (x+1)+log2 x=log6
|[log2(x)]^2-3log2(x)+1|