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A= the domain of f(x) where f(x) = log x...

`A`= the domain of `f(x)` where `f(x) = log x^2` and `B` =the domain of `g(x)` where `g(x)=2 log x`, then `A-B=` (i) `emptyset` (ii) `(-infty,0)` (iii) `(0,infty)` (iv) `(0,1)`

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