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The domain of the function f: Rto R defi...

The domain of the function `f: Rto R` defined by `f(x) = sqrt(x^(2) - 7x + 12)` is

A

`(-oo,3]uu[4,oo)`

B

`(-oo,3]nn[4,oo)`

C

`(-oo,3]uu(4,oo)`

D

(3,4)

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The correct Answer is:
A
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