log2(x-2)

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log2(x-2)
log2(x-2)

log2(x-2)<3等于，
log2(x-2)得到，x-2>8
x>10

log2(x-2)x-2>8
x>10

如果是以2为底，(x-2)<2^3=8
x<10

首先x-2.>0得X>2
其次是增函数X-2<8得X<10，所以210

2的三次方8x>10

log2(x-3)x-3<8
x<11

∵x-2>0
∴X>2
∵log2(x-2)为增函数
∴x-2>8
即x>10

|2x-log2^x| |[log2(x)]^2-3log2(x)+1| 化简：(log2(x/4))*(log2(x/2)) log2(2X-1) log2(x^2)图像 log2(x-2) log2 (x + 3) + log2(x + 2) = 1log2 (x + 3) + log2(x + 2) = 1 log2(x – 2 ) + 2 = log2(5)log2(x – 2 ) + 2 = log2(5) log2(x – 2 ) + 2 = log2(5)log2(x – 2 ) + 2 = log2(5) log2 4+log2 (x+2)怎么算?log2 4+log2 (x+2)=log2 (4x+8) 不等式|2x-log2^x| log2(2x)*log2(x)=2 x=? f(x)=log2(x/8)*log2(2/x) log2(x2-x-2)>log2(2x-2)解不等式 log2 (2^x-1)·log2 [2^(x+1)-2] log2 (2^x-1)·log2 [2^(x+1)-2] log2(x-1)>2定义域log2(x-1)>2 定义域解不等式2log2 (x-4)< log2 (x-2)