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log2(log8x)=log8(log2x)求X!求X的值log2(log8x)=log8(log2x)没有小数点.

题目详情
log2 (log8 x) = log8(log2 x) 求X!
求X的值
log2 (log8 x) = log8(log2 x)
没有小数点.
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答案和解析
log2 (log8 x) = log8(log2 x)因为真数大于0,所以log8 x>0,x>1.则log8 [(log8 x)]³ = log8(log2 x)[(log8 x)]³ = log2 (x)即[(log8 x)]³ = log8 (x)³,[(log8 x)]³ = 3log8 (x),移项得:[(l...