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If the domain of function f(x)=x^(2)-6x+...

If the domain of function `f(x)=x^(2)-6x+7` is `(-oo,oo)`, then the range of function is

A

`(-oo,oo)`

B

`[-2,oo)`

C

`(-2,3)`

D

`(-oo,-2)`

Text Solution

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The correct Answer is:
B
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