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If domain of f(x) is(-oo,0], then domain...

If domain of `f(x)` is`(-oo,0]`, then domain of `f(6{x}^2-5(x)+ 1)` is (where {.} represents fractional part function)

A

`bigcup_(n epsilonI)[n+1/3,n+1/2]`

B

`(-oo,0)`

C

`bigcup_(n epsilonI)[n+1/6,n+1]`

D

`bigcup_(n epsilonI)[n-1/2,n-1/2]`

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