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Domain off(x)=log(x^2+5x+6)/([x]-1)where...

Domain of`f(x)=log(x^2+5x+6)/([x]-1)`where [.] denotes greatest integer function:

A

`(-oo,-3)uu(-2,oo)`

B

`(-oo,-3)uu(1,oo)`

C

`(-oo,-3)uu(-2,1)uu[2,oo)`

D

`(-2,1)`

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