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If f : [2,oo) to R be the function defin...

If `f : [2,oo) to R` be the function defined by `f(x)=x^(2)-4x+5,` then the range of f is

A

R

B

`[1,infty]`

C

`[4,infty]`

D

`[5,infty]`

Text Solution

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The correct Answer is:
B
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