log(2)(x)log(2)(4x)-3log(2)(x)-12=0
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log(2)(x)log(2)(4x)-3log(2)(x)-12=0log(2)(x)log(2)(4x)-3log(2)(x)-12=0log(2)(x)log(2)(4x)-3log(2)(x)
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
令a=log2(x)
则log2(4x)=log2(4)+log2(x)=2+a
所以a(2+a)-3a-12=0
a²-a-12=0
(a-4)(a+3)=0
a=4,a=-3
a=log2(x),所以x=2^a
所以x=16,x=1/8
log(0.5x)(2)-log(0.5x^3)(x^2)=log(0.5x^3)(4)
[( log(x^2) + log(x^4) )/ log(100 x)] = 4 求X
log(2)(x)log(2)(4x)-3log(2)(x)-12=0
简化2log (x + 4) – log(2x + 8) + log(x - 2)谢谢~
(log(2)(x))^3-4(log(4)(x))^2+log(16)(x)=0
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1/log（2）x+1/log（3）x+1/log（4）x=1,x=?
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试解关于x的不等式log(2)x+4log(3)x+12log(8)x+n·2^(n-1)·log(2^n)x
对数计算1.{log(4)（3）+ log(8) (3)} X {log(3)(2)+log(9)(2)}2.{log(2)(3)} X {log(3)(4)+log(9)(2)}3.(lg2)^+1g2X 1g5 +1g50
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solve:log(x)+log(2x)=2
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