log(a-1) (2x-1)-log(a-1)(x-1)>0
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log(a-1)(2x-1)-log(a-1)(x-1)>0log(a-1)(2x-1)-log(a-1)(x-1)>0log(a-1)(2x-1)-log(a-1)(x-1)>0log(2x-1)-
log(a-1) (2x-1)-log(a-1)(x-1)>0
log(a-1) (2x-1)-log(a-1)(x-1)>0
log(a-1) (2x-1)-log(a-1)(x-1)>0
log(2x-1)-log(x-1)>0
log(2x-1)>log(x-1)
①当0