If the domain of function \[f(x)={{x}^{2}}-6x+7\] is \[(-\infty ,\ \infty )\], then the range of function is [MP PET 1996]

If the domain of function \[f(x)={{x}^{2}}-6x+7\] is \[(-\infty ,\ \in

1.	If the domain of function \[f(x)={{x}^{2}}-6x+7\] is \[(-\infty ,\ \infty )\], then the range of function is [MP PET 1996]
A.	\[(-\infty ,\ \infty )\]
B.	\[[-2,\ \infty )\]
C.	\[(-2,\ 3)\]
D.	\[(-\infty ,\ -2)\]
Answer» C. \[(-2,\ 3)\]

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If the domain of function \[f(x)={{x}^{2}}-6x+7\] is \[(-\infty ,\ \infty )\], then the range of function is [MP PET 1996]

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