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The domain of the function f:RrarrR defi...

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

A

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

B

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

C

3)`(3,4)`

D

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

Text Solution

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The correct Answer is:
B
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